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I appreciate the info. My truck does not have working AC, and I hadn't really planned on ever getting the AC going. I figured if it were a simple swap I would go ahead and do it. I do use the truck's heater...when the AC controller decides to work that is.I don't know everything, far from it actually. But, I believe the heater box is different between the two as the digital controller employs servo motors to control the blend doors. Also, if you have A/C and intend to keep it, they never made a manual A/C control head. All A/C trucks had digital controllers.
Why do you want to do the conversion? The electric stuff is actually pretty reliable. I've had my '89 for over four years now with no issues. It had one bad servo motor when I got the truck, replaced it and have been fine ever since.
Here’s one right hereI don't know everything, far from it actually. But, I believe the heater box is different between the two as the digital controller employs servo motors to control the blend doors. Also, if you have A/C and intend to keep it, they never made a manual A/C control head. All A/C trucks had digital controllers.
Why do you want to do the conversion? The electric stuff is actually pretty reliable. I've had my '89 for over four years now with no issues. It had one bad servo motor when I got the truck, replaced it and have been fine ever since.
Interesting. And that's gonna be at least a 1992 model based on the needle/non-tach cluster, and gray bezel/switch coloring. (rationale behind my thinking: 1988-1989 would have black bezel/switches and moonie gauges, 1990 would generally be gray but still have moonie gauges, 1991 would be moonie gauges or needles w/tach.)You must be registered for see images attach
Here’s one right here