Can you trade a 1991 Jeep Cherokee keyless entry module for a newer Jeep Cherokee keyless module like 1993 to 1999?

Answer 1

I've looked at wiring diagrams for the power door locks on Cherokees. My Haynes manual shows two different diagrams: one for "1989 and earlier models with keyless entry" and one for "1990 and through 1996 models with keyless entry." I believe that '90 through mid-'92 used non-reprogrammable infrared transmitters/receivers while mid-'92 through '96 used reprogrammble infrared transmitters/receivers. So those two systems will have different parts/components, but, since all '90-'96 models share the same diagram, I think that the keyless entry receivers would be interchangeable. ('97 and later models used dealer reprogrammble radio transmitters). UPDATE: I have successfully upgraded the keyless entry module on my Cherokee. Mine is a 1990 Laredo but I'm pretty sure that the factory module was from the 1989 and previous models. Regardless, I installed a new overhead console from a 93-95 Grand Cherokee that included keyless entry. I chose this one from the junkyard because the 93-95's had the reprogrammable receivers. Anyway, all I did was run all the wires down the passenger side A-pillar, cut off the old receiver wires, and splice the new ones in. The 4 wires to the old receiver were pink (constant 12v power), black (ground), tan (went to unlock relay), and green (went to lock relay). Of course, the newer Grand Cherokee module had extra wires for bells and whistles that my older Jeep is not equipped with, so they just got taped off. Now, since my new receiver can be programmed to work with any Infrared transmitter, I had to figure that much out. The step-by-step process can be found by a simple Google search, but I can tell you that the driver's door must be left open during the process. I had not spliced anything but those 4 wires, so my receiver would not have been able to detect if any door was ajar. So, I searched and discovered that an extra yellow wire I had was supposed to go to the door jamb switches. It is a 12v feed, so the module knows a door is open if this wire is grounded. So, I just connected it to a good ground during the programming process and..... BINGO! everything works now.