viper 5901 in 2005 f150 lariat keyless

1.) Which bypass unit should I buy?

anything from fortin or idatalink for bypass, or you can buy a data module to control locks, etc through data (easier for first time installers)

2.) Do I need an extra key to use the remote start feature?

No if you use a self learning bypass.

3.) Is there anything else I should buy prior to the install?

get some diodes, resistors and relays (standard 30 amp relays) incase you need them for door locks.

All you need is the Viper 5901 only 1 relay only if you want domelight supervision actually you dont even need a relay you can just hook up domelight sup(-) from alarm to one of the individual door trigger wires(same thing)

all modules for this truck require 2 keys for programming some older modules require you donate a key and install it in a module hidden underneath the dash. Either way you need two keys.

Since you dont have 2 keys or you are not willing to fork over $120+ for a new key then just permanantly bypass the PATS system.

1)remove upper and lower shroud around steering column

2) remove screw holding transponder ring in position

3)insert key into ignition and turn forward to RUN position

4) Take a pick and push on ballbearing while pulling on ignition

     key and igniton should easily slide out

5) carefully remove transponder ring from ignition housing

6) reinsert ignition and key and turn ignition off

7) carefully remove wiring from steering column so that transponder ring can be secured under dash

8)  remove transponder from key( there are 2 types of keys- 1 has a window on the top of the key in which you carefully slice square window off the top of key the pull chip out with small pick-be careful this chip is glass. Type 2 --no window use sharp razor knife and slice rubber off key half way exposing small black rectangle chip and carefully remove

9) affix chip with 2 way tape to transponder ring and start car

10) super glue rubber head on your key back together

11) black tape - really good chip in place so cant move or fall out if 2 way tape fails couple of zip ties for added measure

12) double and triple check truck starts and stays running

13) presto -- you bypassed PATS

14) No harm done- is completely reversible- saves you money

15) now you can get extra keys for $5 dollars each

16) Just make sure you hook up the starter kill feature from the alarm

ok, as far as DVR and camera- most likely a waste of your time and money

Whole idea of alarm is preventing unauthorized access into your vehicle.

The only reason to do is for bragging rights and you cant brag to anyone you know or defeats the purpose

there is no delay. some other alarms allow for a silent feature but not yours

these are more common on motorcycle alarms

One thing with that advice given to you by topinstaller is that it permamnently bypasses perfectly good factory security, for no good reason, simpy because and aftermarket piece could never offer that level of security, NEVER! So my advice dave, keeping in mind you want security, leave the PATS in tact get a second keys and use a data bypass and you're still gonna be safe and convenient!

Think about this, you only lost stuff that was in the vehicle, following the above advice could result in you losing the vehicle as well! Which would you prefer?

Just my two cents! , To topinstaller, that info you posted is against fourum rules

Read this

I don't see anywhere where he says he doesn't have 2 keys. If he has two valid keys, almost all modern modules do not require losing a key. 2 keys are required to program the module though, and even then....I swear I saw something on this very forum that the Idatalink stuff could actually be programmed with 1 key, with some correspondence with Idatalink. ABSOLUTELY do not do what topinstaller says.

mikvot wrote:

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I don't see anywhere where he says he doesn't have 2 keys. If he has two valid keys, almost all modern modules do not require losing a key. 2 keys are required to program the module though, and even then....I swear I saw something on this very forum that the Idatalink stuff could actually be programmed with 1 key, with some correspondence with Idatalink. ABSOLUTELY do not do what topinstaller says.

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Thanks catback....not sure how I missed that.

I understand wanting to do what is gonna cost the least amount of money up front, and I have no problem with that. It's his truck....not mine. As you already mentioned, t&t the PATS system is a hell of alot harder to bypass during a break in, than a aftermarket starter kill. Why disable this extra security? I can tell you, that if I had a customer in his situation come in to the shop....I would turn down the job. Nice truck, Nice system.. spend the money for the extra key. Just my opinion.

+1 do not bypass the pats permanantly. and Mikvot, you are correct. Idatalink andFortin both have special firmwares for one key programming.

you load a firmware on, program with one key, reupload the firmware off th emodule onto the idatalink website, a tech will email you back a firmware and presto, you have a module that has a new firmware with 2 keys programmed,  when you only infact had one.

The idatalink ads-tb will work like a champ. I've also used a ton of Fortin key-overide-all's with no problems.

idatalink and fortin pieces are soolid. so easy to program and install is a breeze.

the only downside is tif you dont have adata cable for the idatalink syfff, somtimes you wont have the correct firmware. Fortin pieces have a list of units taht will work without needed to be flashed. its almost a universal bypass (EVO-ALL)

I have used the DEI 1100F bypass on Ford F150's with great success.  It is basically a re-badged iDatalink product.  The correct firmware is already on it.  There might still be some available on the "Buy & Sell" forum for $15.

Not sure if dealers do it, but make sure the new key is not a "cloned" key.  You need two unique, working keys to program the bypass module.