fatherdoug
Tonto Papadapolous
I took the '78 for a drive yesterday, and couldn't get the cruise to work. The last time I used it, I had to mash on the "set" button pretty hard to get the cruise to work. I installed a new cruise/horn pad from a Gen 7 truck which has worked flawlessly for the last 2 or 3 years. The fuse for the accessory circuit, which powers the cruise, is good. I will check vacuum lines and reservoirs to make sure they are good. I guess the only other possibility is the servo(hard to find a replacement), the amplifier(rebuilt available), or the speed sensor(don't know about availability). And yes, the horn works, also. Another possibility is the connections to the ring on the steering wheel.(Clockspring?)
I've been looking at the vacuum and electrical troubleshooting manual that Duncan posted.(Thank you!)
Any thoughts or experience?
I forgot to state this is a factory installed setup. Everything is original except the Gen 7 horn pad.
I've been looking at the vacuum and electrical troubleshooting manual that Duncan posted.(Thank you!)
Any thoughts or experience?
I forgot to state this is a factory installed setup. Everything is original except the Gen 7 horn pad.