2004 dodge ram pu

2004 Dodge Ram PU with OEM alarm system. Compustar 2WFM-S-PRO remote starter Problem: Resistor values that are stated for the truck do not work. I've used 2005 resistor values that will lock the doors and arm the OEM alarm but will not unlock and disarm the OEM system. I used 335 ohm and this will unlock the doors but will not disarm the OEM alarm system. I tested the VIOLET/LIGHT BLUE wire with the DMM to test what the resistance on the wire is while turning the key in the driver's door and got 335 ohms when unlock, but this only unlocks the door. I need to know if anyone here knows how to test for the OEM alarm disarm ?Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

according to directechs, its 820 to lock, 330 to unlock. Dont now what you had, but figured it was worth a shot. Also, have you tried the universal door lock module (456LW I believe). I had a similar problem with a newer dodge van, and went through an entire resistor pack with no luck... the module worked great. HTH kennyKenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205

the Door Locks are a 1-Wire System, the LOCK requires a (-)Negative thrua 820 Ohm Resistor and UNLOCK requires a (-)Negative thru a 330 Ohm Resistor, For the 2004 model year vehicle, to ARM/LOCK will reuire a (-)Negative thru a 2000 Ohm Resistor and to DISARM/UNLOCK requires a (-)Negative thru a 480 Ohm Resistor. A Single Pulse thru the 480 will DISARM without Unlocking. Double Pulse to UNLOCKFor the 2005 model year vehicle, to ARM/LOCK will require a (-)Negative thru a 644 Ohm Resistor and to DISARM/UNLOCK requires a (-)Negative thru a 1565 Ohm Resistor. A Single Pulse thru the 1565 will DISARM without Unlocking. Double Pulse to UNLOCK

All those values are from Directechs and we tried all the values and NONE of them worked. Anyone else ??Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

I think you have the lock and unlock wire.  If you got a 330 ohm resistance then thats the actual lock/unlock wire.  Look for another wire..my other programs give the same result as in arm and disarming the system.

I know it's not the lock & unlock because the OEM alarm arms with the Compustar lock output. I just need to know how to test for DISARM seeing that the wire that I tested VIOLET/LIGHT BLUE did not give me a proper resistance when disarmed.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

KarTuneMan wrote: Here's what Astro has. PURPLE / Lt.Blue    lock/arm (NEG)- 1.8K    unlock/disarm   (NEG)- 450k dbl pulse.

Is this for the 04 or 05 truck ?Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

04...... Thet show 04, and 05 as the same!