03 jaguar x type

Hey just installed an 5901 in the car< all works prefect except that the oem alarm will not disarm when the system is armed an r/s is tried. R/s works perfect when system is disarmed.

And it seems every 30 mins after arming the alarm goes off, remote says door.  I diode isolated both lock wires and the door pin wire. So do i need to double diode isolate the door pin, and if so i put the diode in line with the wire after my connection to the alarm and before the gecm?

GECM --[ | |    ]-- (diode)----alarm door pin wire------to door pins

Correct? or diode facing other way?

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06 F250 PSD Crew FX4

Diode facing the other way if door pins are neg. triggered.
You are trying to stop a neg. signal FROM the ECU to the 5901.
Congrats by the way very few people would take this on, even if it is a Ford Mondeo, hey just a thought, if it is a Mondeo you hit the answer right on the money, look up DEI 1076 diagramme in the down load section, it shows the wiring in great detail.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

why do you say congrats? it wasnt that bad of an install. Just took a long time to install because i soldered and double checked everything.

So i will try the double diode, but does anyone know about the oem disarm, like there are the two oem alarm arm and disarm wires on the viper, say i was to relay hook those up to the door lock wires would that work? or is there a way to get the viper to unlock car, r.s and then lock?

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06 F250 PSD Crew FX4

You didn't read why I said congrats, proper soldering and pretesting is a given to avoid problems.
You might use the key sense wire, unfortunately it's pos so you would need to take a status output wire, (GWR) and then if it's connected to a by-pass, line diode out via a 1N4004 diode, diode bar towards R/S to a relay:
Connect to 85.
12V+ constant via a 2amp fuse to 86 and 87.
30 to the key sense wire.


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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

i did a 2002 jaguar s-type a while ago (alittle different but may help) i had to do keysense   also i belive i had to set the remote start to unlock then relock   where did you grab the locks from ?   behind the glove box Blue negitive trigger double pulse ?

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If i Can't Install it    I Don't need it   Joe

Will hook up the keysense then, yes i took the green and orange wire (both diode inulated) for lock, and the blue for unlock yes double pulsed all from p/s kick/glove box.

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06 F250 PSD Crew FX4

Just for the hell of it did you try putting the disarm wire with the unlock wire

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If i Can't Install it    I Don't need it   Joe

When i hook up the diode the way you say to for the door pin, i loose doome light functions with the lock and unlock, ie lights are always off, unless i manually turn them on with the switch.????

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06 F250 PSD Crew FX4

oohkk, so i hooked up a relay as described above for the key sense, measuered it at the keysense wire, gets 12v when "ground when armed"; (relay also clicks) also read 12 volts at wire when key is inserted, meaning i have correct wire. anyway oem alarm still went off when systemed armed and r/s. 12 volts to k/s wire from relay. Now when the key is in the tumbler and r/s, works flawless, i looked and tested to see if there was more wires that are energised when key is inserted, theres only the black wire. wth.

So i ran outa time as buddy had to go, so i guess next time i work on it, try the arm and disarm oem from viper through  relays, as its only a 200ma signal.

Any help or sugestions?

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06 F250 PSD Crew FX4