2002 Dodge Dakota Sport (Quad Cab)
Starter/Alarm is a Compustar CM5000 w/ RF-P2WSS
This particular truck is equipped with keyless entry, a "passive OEM security system" and has a black key (not the gray transponder key). As far as I can tell, when using the factory FOB, this "security" feature consists of a panic button on the FOB, horn honk & parking light flash upon lock (arm?) and dome light & cargo light supervision upon unlock (disarm?). When locked with the FOB, there is no security light on the dash and if the doors are opened manually there is no alarm triggered. You can hop right in and start the vehicle from the key, even if it was never unlocked/disarmed via the FOB.
The remote starter works as it should, and if the lock/unlock outputs are connected to the standard WHITE/ green lock wire with ~315 & ~620 Ohm resistors the CM5000 does lock/unlock the doors like it is supposed to.
However, that configuration does NOT trigger the OEM dome light supervision circuit, which is what I would like for it to do.
The strange thing is that in addition to the WHITE/ green lock wire, there is also a lt. GREEN/ orange wire in the plug right where it is supposed to be for vehicles which are equipped with an "active" OEM alarm. When tested, this wire clearly demonstrates a change in resistance, but it pulses too fast for my meter to capture it.
According to the documentation I have, if this lt. GREEN/ orange wire is negatively pulsed through a 1.5K Ohm resistor, it is supposed to disarm the OEM security feature, and a second pulse should unlock the doors. Likewise, if pulsed though a 620 Ohm resistor, this wire is supposed to lock the doors. Presumably, this should trigger the OEM dome light supervision as well. Yes or no?
The problem is that this approach does not work at all. I'm as certain as I can be that I have the right wire, but I cannot figure out how to use the CM5000 to lock/unlock the doors & trigger the OEM supervision feature simultaneously.
Am I simply using the wrong values of resistors, or am I going about this all wrong? Is it even possible to trigger the OEM dome light timer this way like it is in other domestic vehicles, or not?
The CM5000 does have a dome light supervision output, but it isn't strong enough to ground out the circuit. I realize that a relay can be utilized to accomplish that, but I'd rather figure out a way to utilize the OEM circuit, mainly to determine if it can be done.
Any help would be greatly appreciated.