Gary from Texas

I never did get this working. My truck does have the original wiring, but the actuator connector was cut off and replaced. Now I don't know the correct pins to put it back. Does anyone have a wiring diagram for a 91 cruise control system?

OK guys, I need some help. I'm replacing my after market cruise control actuator in my '91 Comanche with a new (used) OEM actuator. The problem is that the wiring connectors aren't the same. They both have 4 pins, but a different style. I need to know the pinout for the factory actuator so I can make sure I match the connections. I was able to test the wires from the actuator to the control module (which had this great identification label on it). Looking at the after market actuator connector, from left to right. I think the left one is pin 4. 4 - BLK/WHT to 11 - VAS VALVE 3 - YEL/BLK to 12 - VENT VALVE 2 - WHT/RED to 20 - VALVE POWER 1 - YEL/BLK to 12 - VENT VALVE. This is the same as pin 3. All of the wiring looks to be original so the color codes should be correct. I just need a picture of an OEM connector showing the wires or a pin out. Also, do you think I need to replace the control module? The problem was a mechanical issue with the throttle control cable attachment so everything should still work. Maybe?? Thanks So here is what I know.

So I'm looking at getting my truck painted soon. Does anyone know a place that sells the stripe decal kit for a 91 Comanche Pioneer, like the one in this photo from when I bought my truck. I can find the older stripe decal, but not the one from 91-92.

So for anyone following this post, here is the final result. I attempted to remove the fuse panel to find the issue with the wiring. I took out the 2 screw under the dash and the one screw from the engine side (very difficult), but I wasn't able to get the two halves apart. I'm guessing it was weather sealed and I didn't want to mess with that. Anyway, I ended up putting in an 'Add a Circuit' into the fuse panel and running a new wire to the HVAC control. Everything works great now. Thanks for all the help.

My volt meter is grounded at the metal frame under the dash. I used the existing ground wire when testing the blower motor with 12V connected to the battery. It's freezing cold out this week, so further testing will have to wait until the weekend. Has anyone taken apart a fuse panel? Are there any risks of something going wrong and not getting it back together. I know about the hidden bolt in the engine compartment, but otherwise it looks pretty straightforward. Wish me luck.

I do have 12V at the selector switch, but it goes to 0V as soon as I connect the blower motor. This happens even if I bypass the the entire control module and the resistor. At this point, I think I have to pull the fuse panel and look for the problem. Not looking forward to that.

Everything else on the truck is working correctly.

I did check the blower motor by connecting the 12v line to the battery and using the same ground. Seemed to work just fine.

So I'm troubleshooting an issues with my 91 Comanche. The blower motor stopped working. I have 12V getting to the motor when it's disconnected, but as soon as I connect the motor it goes to 0V. I have bypassed the blower resistor, the blower speed switch and the HVAC selector switch. The problem appears to be between the 25 A blower fuse and the input to the selector switch (the pair of black/tan wires). I see the 12V at the end of the connector and it goes away when I pull the fuse. But I don't have continuity between the two points. I show 37K ohms of resistance. My question is, are there any other components between the fuse and the selector switch or any place else I can test this without having to pull out the fuse panel?

91 MJ 4.0L 4x2 AT SWB 260,000 miles, not the original engine Original Owner - purchased new in April 1991 Build Date: 2-91 Dallas, TX Daily Driver, still in great condition and trying to make it better.