1999 gmc safari newb viper5704

Hello all my new 12 volt friend's my name is barry. I recently purchased a viper 5704 remote start/alarm. i also purchased 508d motion sensor & 506t audio glass break sensor to go along with my install. I Plan to install it myself, in my 99 gmc safari. I certainly consider myself an advance diyer with lots engine swaps, turbo charged engine tuning & customizing of many makes. That being said I have never installed a alarm/remote start (here I would like to install both) but the included instructions are a bit vague. I know I have to either bypass the passlock with a resistor.. or buy a module, xpresskit? And is their any benefit installing a xpresskit module over the resistor bypass? Door lock control? maybe other features?. And beyond that I'm kinda lost which wire goes where on the vehicle? and which wire does what on the viper? Maybe I'm overwhelming myself any help would be greatly appreciated. I would really like to do this install myself with the help of others. I really enjoy learning If the resources are available. Thank's

Hi Barry!  Welcome to the 12 Volt Forum.  Being familiar with cars and willing to research and learn is
a good thing.  With that attitude, some basic 12V tools and a weekend off you will be able to install the
Viper alarm system.

Research and planning will be the most important part of the job.  While the install sheet included with
your Viper is brief, cryptic and vague, you can locate a more complete manual in the Downloads section.
Compare the guide to your physical system, as Viper has changed some connectors around on the
newer units.

Next download all the wire guide info you can find.  Print it out, compare it, note any differences and
make up a "to - from" cheat sheet to use during the install.  Here are some wire guide sources :
Here is a link to Bulldog Security :  https://www.bulldogsecurity.com/bdnew/vehiclewiringdiagrams.asp
Here is a link to Ready Remote :  https://www.readyremote.com/main.asp
Here is a link to AudioVox :  https://techservices.audiovox.com/AccessRequest.aspx    Sign-up & info is free.
This site will have wire info in the Vehicle Wiring section.  You can also do a search function for prior posts
that will give you some insights to problems encountered on your vehicle.  As you probably know, Chevrolet
has twin to your Safari, so search on it, too.

Post your proposed wire connections for forum member review / input and ask any questions you have.

The easy part will be taking the dash apart and making all the connections. 

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Soldering is fun!

two questions h1/4 park light isolation I don't understand its purpose but I'm pretty sure it's not needed on my vehicle. & h1/5 parking light output this just gets wired directly (no relay) to the vehicle?
I used 》to symbolize vehicle wire side


H1/1 red +12vdc constant input 》red or
RED / white @ ignition switch.

H1/2 black -chassis ground ok

H1/3 Brown +siren output ok

H1/4 WHITE/ Brown parking light isolation.
Pin 87a of onboard relay (not used)

H1/5 white +Parking light output.》+brown @headlight switch or (same Brown)2 other possible know locations.

H1/6 orange -500ma GWA output. 》 starter kill relay and or sensor ground with diode(s)

All right!     Good work on the H1 harness.  Just a few updates.

Correct, the H1/4 WHITE/ Brown wire won't be necessary on your Safari.  Yes, the H1/5 White wire will be directly
connected to the Brown (+) Parking Light wire at the Headlight switch.  Just make sure the Viper's internal
jumper/fuse is set to (+).

The H1/6 Orange wire won't be necessary for Starter Kill.  The Viper has a built-in relay for the H3/4 and
H3/5 wires that performs this function.  These wires can also do Anti-Grind, see programming Menu 3,
Item 13 for more info.   Typical uses for H1/6 are window roll-up, etc. 

As a note on the 5704 install guide, download the older 5701 install guide.  There are some differences,
especially with the wire / harness locations, but it provides a more detailed reference on wire function
and programming options that you can correlate to your newer 5704 system.

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Soldering is fun!

The next area of concern is the Passlock2 and the power door locks.  As you mentioned, there are
bypass modules available for the Passlock2 bypass.  They will make the install easier but do cost
more than a couple of relays and a resistor.  Either will work well.  Here is a nice guide for doing the
Passlock2 bypass with relays from Audiovox :  https://documents.audiovox.com/700054.pdf   To do
this properly, you will need a Digital Multi Meter and a variety of resistors ( or a handy RadioShack ).
 
One of the better bypass module alternatives is the iDatalink ADS TBSL PL.   They can be found online
for under $40.  They are very easy to install and program and very reliable.  Here is a link to the iDatalink
WEB site to look-up and get the ADS TBSL PL install guide :      https://www.idatalink.com/support

For the door locks, you need to convert the Vipers (-) lock outputs to a (+) pulse that the Safari
needs.  There are diagrams of this in the Door Locks section.  Another way is to use the DEI 451M
Door Lock Module.  It does the same conversion, but in a pre-made, neater package.  These are also
available online and go for less that $9.  The 451M install guide is available in the Downloads Section.

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Soldering is fun!

I bypassed the passlock 2 system using a 1k ohm resistor only. will the remote start work this way or do I need to introduce the relays and resistor? from what i could gather the relays & resistor only need to be added to retain the passlock functionality by only momentarily bypassing passlock during remote starts so when the viper is disarmed passlock would still function. So I was thinking the resistor Just tricks the passlock into seeing that resistance even when the key is Absent. As If the key was always in the ignition. sorry for overcomplicating my responses. Im just trying to be thorough. I like to have a understanding of things rather than just saying oh well it works.

If you have already bypassed the Passlock2 immobilizer with a 1K ohm resistor ( by cutting the Yellow
Passlock wire and soldering the resistor between the Yellow ( BCM side ) and the ORANGE / Black
reference wire, and then doing the 30 minute relearn process ), there is no need for any sort of bypass
with the Viper 5704.   You have disabled the vehicles immobilizer system all the time. 

This isn't uncommon, as the Passlock internals of the ignition switch are known for this issue and the
original resistance value it supplied to the BCM is incorrect causing an engine no-start condition and
putting the vehicle into Passlock Tamper Mode.  The good news is that by installing the Viper, you are
adding an alarm system with a Starter Kill circuit to prevent theft and make-up for the disabled Passlock2
system.

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Soldering is fun!

24 pin connector
1 pink/white -200ma ignition 2/flex output
(Not used)

2 blue/white -200ma 2nd status/rear defrost output(not used)

3 RED / white -200ma trunk release output
(Not used)

4 BLACK / YELLOW -200ma dome light output not sure if is this optional?

5 dark blue -200ma status output. (Not used)

6 WHITE/ black -200ma aux 3 output (not used)

7 WHITE/ violet-200ma aux 1 output (not used)

8 ORANGE / black-200ma aux 4 output (not used)

9 gray -200ma hood pin input (nc) or (no)
(To supplied hood pin)

10 blue -200ma trunk pin/instant trigger
(Not sure about this)

11 WHITE/ blue activation input(not sure about this)

12 violet/white tachometer input (I found a manual saying this must be connected for manual trans, so does that mean not necessary on autos because of virtual tach?

13 BLACK/ white -neutral safety/p brake (vehicle chassis ground)


14 GREEN/ black -200ma factory disarm output (not used)

15 green - door input (not used)

16 BROWN / black -200ma horn output(black wire @steering column)

17 pink -200ma ignition 1 output (not used)

18 violet +door input (not used)

19 violet/black -200ma aux2 output (not used)

20 Brown +brake shutdown input (white wire @ brake switch)

21 violet / YELLOW -200ma starter output (not used)

22 gray/black -wait to start in (not used)

23 orange -200ma accessory output (not used)

24 GREEN / WHITE -200ma factory alarm arm output (not used)

Looking good!     Some more info :

24 pin connector
1 pink/white -200ma ignition 2/flex output   (Not used)
2 blue/white -200ma 2nd status/rear defrost output         (not used)
3 RED / white -200ma trunk release output (Not used)
4 BLACK / YELLOW -200ma dome light output optional
5 dark blue -200ma status output.   (Not used)
6 WHITE/ black -200ma aux 3 output (not used)
7 WHITE/ violet-200ma aux 1 output   (not used)
8 ORANGE / black-200ma aux 4 output         (not used)
9 gray -200ma hood pin input (nc) or (no) (To supplied hood pin)
10 blue -200ma trunk pin/instant trigger not used - rear doors/hatch is common with Purple Door Trigger
11 WHITE/ blue activation input        not used
12 violet/white tachometer input   White (ac)    @ ECM under hood   **
13 BLACK/ white -neutral safety        vehicle chassis ground if auto trans
14 GREEN/ black -200ma factory disarm output     (not used)
15 green - door input          purple (-)  @ headlight switch  ***
16 BROWN / black -200ma horn output        (black wire @steering column)
17 pink -200ma ignition 1 output (not used)
18 violet +door input          (not used)
19 violet/black -200ma aux2 output          (not used)
20 Brown +brake shutdown input (white wire @ brake switch)  ***
21 violet / YELLOW -200ma starter output    (not used)
22 gray/black -wait to start in       (not used)
23 orange -200ma accessory output      (not used) ****
24 GREEN / WHITE -200ma factory alarm arm output           (not used)

**  The 4.3L engine can be a hard cranking engine.  Running in Tach Mode will ensure reliable
remote start-ups.

***  Also found in White junction connector at firewall.  ( Brown Parking Light wire is there, too. )

****  If you want to power the Brown Accessory2 circuit ( might not be necessary ) use H2/23, a 30/40 Amp
SPDT relay and a 20 Amp fuse.  Wire as follows :
Relay Pin 85 to Viper H2/23 Orange
Relay Pin 86 and 87 to +12V constant thru 20 Amp fuse
Relay Pin 30 to Brown ACC2 wire @ Ignition switch
Relay Pin 87a not used

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Soldering is fun!

H3/1 pink ignition 1 input/output. (Red @ ignition harness)

H3/2 RED / white fused 30a input ignition2/flex relay (not used)?

H3/3 orange aaccessory output (orange wire @ignition harness)

H3/4 violet starter output car side of starter kill (yellow starter side of vehicle @ ignition harness)

h3/5 green starter input key side of starter kill (yellow key side of vehicle@ ignition harness)

H3/6 red fused 30a ignition 1 input(pink@ ignition harness)

H3/7 pink/white ignition 2/fpex relay output (@ ignition harness pink/white or white)

H3/8 pink/black flex relay input 87a key side of flex relay. (Not used)

H3/9 RED / black fused 30 amp accessory/starter input. (red @ ignition harness)

I don't feel I did too great on this harness I wasnt sure which are switched & which are constant.. idk

The H3 harness confuses everyone the first time.  The wire descriptions are a little vague.
Basically all the Viper Red and RED / ??? fused wires go to a +12V constant power source.
Viper   1999 Safari
H3/1 pink ignition 1 input/output.    (pink@ ignition harness)
H3/2 RED / white fused 30a input ignition2/flex relay (Red @ ignition harness) 
H3/3 orange accessory output        (orange wire @ignition harness)
H3/4 violet starter output car side of starter kill     (yellow starter side of vehicle @ ignition harness)
h3/5 green starter input key side of starter kill       (yellow key side of vehicle@ ignition harness)
H3/6 red fused 30a ignition 1 input   (Red @ ignition harness)  
H3/7 pink/white ignition 2/fpex relay output   ( pink/white or white@ ignition harness)
H3/8 pink/black flex relay input 87a key side of flex relay. (Not used)
H3/9 RED / black fused 30 amp accessory/starter input.       (Red @ ignition harness)

Check and test the ignition switch harness closely.  There are probably more that one +12V constant power
wires.  They might be Red and / or RED / White.  Split the Vipers load between them.

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Soldering is fun!

Gotcha Thanks much

well I got It all wired up everything seems to work besides remote start, when I hit the remote start the parking lights flash 7 times and says remote start error. I already try putting it into automatic mode any idears?

Yes, keep trying.    While you think you got it into Auto Trans Mode, you didn't.  ( There have been a number of posts on this same issue.)  Without a BitWriter, there is no way to verify the programming options, just trail and error.  Programming the unit with the remotes can be a real PITA. 

Did you connect the Tach Input wire to the ECM and get a successful Tach Learn?

Did you plug in the Neutral Safety Switch and turn it to ON?

Almost done!!!!  

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Soldering is fun!

well the remote start works now I was just having a hard time getting into automatic mode but after using the 5701 manual you recommended, It started right up!


Thank you so much for your help I could not have done it without your help, and I feel I learned alot through the install which will help me get the most from my system. Hmmm that turbo timer feature would be great on my volvo.
Thanks again.

So lastnight around 9:00 or so I went inside to make something to eat after soldering & routing all my security wires on the van, I was inside for about 15mins.. generally i don't see any trick or treators on my block. its a nice neighborhood, right by the water. But the Street i live on is a really dark & quite street. so Anyhow when I went back outside to the van (parked in my driveway infront of the garage) I hear lite voices & spot two mountain bikes parked at the rear of my van. As I walked over I see a man with his hands cuffed around his face peeking in my rear window & a women peeking in my drivers door. "Excuse me" I said.. They excitedly stepped away from my van trick or treat the man said. I humored him and said "oh you don't wanna see my trick & the treat ain't sweet" at this point the man is trying to explain & the woman just starred blankly. I told him I don't wanna hear anything he had to say and to get lost. So they gladly jumped on their bikes and left. My guess is they were using Halloween as an excuse to peek in people's windows & walk up in their yards. well my van is full of tools 2.5 hp portable compressor, dewalt power tools, milwaukee, snap-on, klein, fluke, field piece, I work in hvac & keep all my automotive tool's and hvac tool's and equipment in this van. so they got a peek of the stuff im sure.

Well would you believe it @ around 2:30am my newly installed viper alarmed me to wake up, I thought to myself "no way had I wired something wrong. I disarmed it as I walked outside to see the same man as earlier, but this time in my passenger seat frantically trying to pull and break the lock handle on my vans Partition, I announced myself & I let him see that treat we had discussed earlier. He ran so fast back to the getaway vehicle Dodge caravan. I managed to get the plate number. And hopefully some fingerprints. Wow! On the very night I get the security system functioning. Im am just thankful he didn't make away with anything.

Looks like the Viper Alarm system has already paid for itself!     Just be ready for a lot of install requests from friends and family when they hear about your new Viper system...

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Soldering is fun!