5901 problems, 1999 f150

Ok I just installed a Viper 5901 in my 1999 F150. The problem that I am having is that I am unable to get into the programing mode in the control module. I follow the instructions but I get nothing from the system. Now I don't know if it is because it doesn't sense that my key is in the ignition or what as if I trip the door trigger and it reports back to me and then put my key in the Ign. reset it nothing happens, LED still continues to blink. I have all the wires hooked up right so I am stumped. I wonder if I am just missing something. Could Someone please HELP me out, I have been trying to figure this out for two days now. Thanks to anyone that replies.

Does the LED stay on all the time whether it's locked or unlocked? If so it's in Valet Mode. I think it's function, fuction, unlock to exit valet mode through the 5901 remote.

No, It's not in valet mode, I thought some may be wrong with the connections so I only hooked up the Alarm portion to see if it would do anything but still nothing. Blinks like normal when you arm it and nothing when you disarm it. Got a Bitwriter coming so hopefully I can program it without using the Control Box. Going to triple check all the connections again when it is warmer. Hopefully I am just missing something easy.

Does it remote start? Do the door lock and unlock? Or does it do nothing al all?  Do you get any parking lights flashing??

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Door Locks do not work, Lights work and Door Trigger work. Status Led also works. Remote Start does not work due to if being in Manual Mode and I do not have the Tach wire hooked up. As of right now this is what I have hooked up.


ALARM   F150 Wire
Red H1/2          Yellow          12+ Constant
Brown H1/3          Siren
Black H1/5          Ground
Violet H1/6          Blue/Black
White H1/11          Brown

BROWN / Black H2/8     Dark Blue
Dark Blue H2/10          PKALL Bypass
Grey H2/15          Hood Pin
Brown H2/17          Light Green
BLACK/ White H2/18       Ground

Door Lock
Blue                  Pink/Green               
Green    Pink / YELLOW
(Also Tried switching these two wires and still nothing)



Remote Start
Pink H3/1          RED / Black          12+ when at Ign.
RED / White H3/2          Yellow                  12+ Constant
Orange H3/3          Grey / YELLOW          12+ when at Acc.
Violet H3/4          RED / Light Blue             Car Side
Green H3/5          RED / Light Blue             Key Side
Red H3/6          Yellow                  12+ Constant
Pink/White H3/7          Grey / YELLOW          Ign. 2 listed
RED / Black H3/9          Yellow                  12+ Constant

Ground the green wire on the Primary harness and try programming.

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Ok for some odd reason now its letting me get into the programming. Didn't change anything just unplugged everything then plugged it back in. Now just have to figure out how to program this thing, Keep messing up on what I have to press and when. Thanks for all the help.

P.S. I still can't get the locks to work.

Ok I have it programmed right now. Got the remote start to activate but is not cranking. That will be easy for me to fix but the two questions I have now are:

1. Door locks are not working. Going to do some measurements on those tomorrow but on the f150 can I just hook up directly to the wires that correspond to the (- or +) that particular wire or do I need a relay?

2 Is there a reason different lights light up when I activate the remote. I.E. when I attempt to remote start the only light that lights is the ABS light and every now and then the normal lights light up that would come on when you put your key to IGN. Also when those lights light up the security light (Pats light) blink fast.

Thanks for all the help!!!!

On most fords grey / YELLOW on the ignition is harness is actually accessory and not ignition. The one I did the other day had two ignitions listed and one was grey / YELLOW, broke out the meter and tested it and it tested as Acc. The truck actually had three ACC wires and only one ignition.

Also if the truck had factory keyless they should be straight negative locks, if not you will have to use relays.

And you need to have the pink wire on the PKALL running to the ignition wire on the remote start. Sounds like the bypass is not programmed correctly not allowing the truck to crank.

Working on hooking up a Viper 5901 RS to my 1999 F150 XLT. I was wondering what IGN and ACC wires I need to hook up. I have 4 wires that show 12 + when at ON position and 2 at ACC. and ON position. Do I need to hook up all 4 wires for IGN and the 2 wires for ACC. or can I get away with 2 IGN wires and 1 Acc. that come out of the remote start. Here is the list of colors and what they show on my truck.

RED / Black 12+ at IGN
Grey / YELLOW 12 + at IGN
BLACK/ Green 12 + at IGN
Blue/Green 12 + at IGN
2 GREEN/ Purple 12+ at Acc and IGN.

Here is info from Bulldog:
 12 VOLT CONSTANT            YELLOW (+) and LIGHT GREEN/ PURPLE (+)    IGNITION SWITCH HARNESS    
 STARTER                     RED / LIGHT BLUE (+)                       IGNITION SWITCH HARNESS    
 IGNITION 1                  DARK BLUE/LIGHT GREEN (+)                IGNITION SWITCH HARNESS  
 IGNITION 2                  RED / BLACK (+)                            IGNITION SWITCH HARNESS    
 ACCESSORY /HEATER BLOWER 1   GRAY / YELLOW (+)                          IGNITION SWITCH HARNESS    
 ACCESSORY /HEATER BLOWER 2   BLACK/ LIGHT GREEN (+)                    IGNITION SWITCH HARNESS 

Here is info from Audiovox:
 Battery                     GREEN/ PURPLE OR YELLOW                  IGNITION SWITCH HARNESS  
 Ignition 1                  RED / BLACK OR BLUE/GREEN                  IGNITION SWITCH HARNESS  
 Ignition 2                  GRAY / YELLOW  (+)                         IGNITION SWITCH HARNESS  
 Ignition 3                  DARK RED / BLACK  (+)                      IGNITION SWITCH HARNESS  
 Accessory 1                 GRAY / YELLOW OR BLACK/ WHITE               IGNITION SWITCH HARNESS   
 Starter 1                   RED / LIGHT BLUE  (+)                      IGNITION SWITCH HARNESS

You might want to double check the wires.  First test should be with ignition switch at OFF position
to locate the +12v Battery wires.  I believe the Bulldog info works well.  Use the Viper Flex Relay
for IGN2. Obtain a 30/40 Amp SPDT relay for ACC2 and wire as follows:
Relay Pin 86 and Pin 87 to +12v constant thru 20A fuse.
Relay Pin 30 to vehicle ACC2.
Relay Pin 87A not used - insulate.
Relay Pin 85 to Viper (-) 200 mA Starter Output Violet wire.

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Soldering is fun!

Thanks for getting back to me, I tiple check the wires. I tested at off position and come up with 2 12 + then went to Acc and came up with the 2 listed then went to on and came up the the 4. All the diagrams I read say to use Grey / YELLOW for Acc. but this is not what the testing shows. I don't want to hook up to the wrong wires. What do you all think?

Go to the downloads section of this site and download the install manual for the Viper 5701. Starting on page 13, it will explain how to find and test for the wires you need.  See if that gets you in the right direction.   The 5701 and 5901 are similar as far as wiring goes.  Does yours have a 18 pin harness?

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Yes, this is the new viper with the 18 pin connector. I am pretty sure I measured the volt correctly as I used to be MECP Certified and was in Auto Collision. I am just unfamiler with this system as I have never installed a viper before and Never in a vehicle with this many Ign. wires. Has anyone installed one in a 1999-2003 F150 if so what Ign. and Acc. wires did you use? Will the remote start work if I only hook up 2 Ign. wires and 1 Acc. wire. The two Acc. wires are the same so not sure if that will matter or not. If I need to hook up all 4 Ign. wires, How many Relays should I use?

These are the Wires in my Ign harness. and what they read minus the small gauge wires.

Two Yellow wires at 12+ Constant
RED / Black 12+ in on position
Grey / YELLOW 12 + in on position
BLACK/ Green 12 + in on position
Blue/Green 12 + in on position
Two GREEN/ Purple wires at 12+ in Acc and IGN.

Do I need to add any relays in this. Sorry for the hassle.

You need to turn the key to test for ACC and Ignition power. ACC will drop to O volts turning crank, Ignition should drop around 10-11 volts.

According to Canada DirectTechs...
Grey / YELLOW - ACC
RED / Black - 2nd ACC
Blue/Lt Green - Ignition
RED / Blue - Starter
Yellow or GREEN/ Purple - 12V

Shouldn't need any additional relays

Ok I have everything hooked up right and the Bypass programmed. I think I may have to add the rest of the IGN wires as all it does is crank. As of right now I have these wires hooked up:

RED / Black to Ign. 1 Pink wire
One Grn/Prpl to ACC. Org wire
Grey / YELLOW to Ign. 2 Pink/Wht wire

Do you think I will need to add a couple relays and hook up the BLACK/ Grn and Blue/Grn wires for the Ign. Sounds like it is not getting Spark or Fuel which leads me to believe one of these other two wires control that.

Typically on Fords, the GREEN/ Violet wires are +12 volt constants.  Most every source says Gray / YELLOW is ACC1.  The Blue/Green must be powered and as an Ignition.  The guides are only guides and the DMM will always be correct.

Here is a diagram for wiring extra relays : https://www.wiringinstructions.com/v2/diagrams200/235%20-%20Adding%20Extra%20Ignitions.pdf

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Soldering is fun!

Where did you run your tach wire? Fords need to go to fuel injector for tach signal. Is the security light flashing when you remote start the vehicle or solid?

Thanks for the help. I thought that possibly one of the other Ign. wires is causing it not to turn over. There is no tach wire hooked up as I am running the virtual tach as it is an automatic. No pats light lights up when it is cranking, tryed it with the key in the Ign. too. Sounds like it just doesn't have spark which leads me to believe one of the other Ign. is controlling that. I will try and hook up the Blue/Grn wire, does this go to Ign. 1 or Ign 2? Thanks for all the help.

Nevermind on the wiring to Ign. 1 or Ign. 2 answered my own question.

***For the love of god run a tach wire and see what happens, takes maybe five minutes*** Doesn't matter if it's an automatic or not.

If you programmed for virtual tach but never let the Viper learn the signal then it wont do anything when you try to remote start the vehicle. to learn virtual tach you have to sucessfully let it remote start until the parking lights come on and then shut it down with the remote.

or unplug the H1 harness and lay a screw driver across the terminals for 15 seconds, plug it back and try to remote start it again.

I'll hook it tomorrow morning and see what it will do. I am also going to try and add a couple relays in the Ign. and see if that helps. Thanks for all the input I appreciate it.

Everything is up and running, had to change the Ign 2 wire to the Blue/Grn wire and the Acc. to the BLACK/ Grn wire. The only thing that is not working at this time is the Bypass, Can't seem to get it programmed. I heard these were a pain in the butt. Anyone know any tricks to get this working?

Here is a link to the Fortin Key-Override-All install guide.  They are the same as far as
programming.  https://ifar.ca/en/download/391/preview.html

Here are the actual wire colors for TX and RX.  The PATS connector is about 8 inches down
the steering column from the ignition switch.

                                  TX                           RX
                          Pin   Color                Pin    Color
F-150 99-02    4   WHITE/ LtGreen    3    Gray/Orange

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Does the D2d things on the back of the Viper brain have be vertical or horizontal. Does it matter what IGN wire it is hooked to. I was thinking I should try hooking it to the Blue/Grn wire on IGN 2 as this shows 8 volts when cranking. I will double check the Pats wires but I believe they are hooked up right.

If you are going D2D, then the Viper jumpers should be horizontal.  ( D2D only saves you two wires. )   Connect to a main ignition switch Ignition wire, not the PATS connector ignition wire.  The thick Blue/Green should be fine.

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Soldering is fun!

Thanks, I think having it connected to the RED / Black is not allowing it to program. I am going to try switching it to the Blue/Grn tomorrow and see if that helps. Thanks for all the Help guys. I hate first vehicles, they take so long. Give me another F150 and I can have this thing installed in prob less then 2 hrs.