Thanks to all who provided assistance. Problem fixed. Turned out that brake pedal vacuum switch was in fact slow leaking and fixed by adding rubber spacer to end. What I learned and may be of help to someone diagnosing this issue. 1. Wires to stalk had cuts in insulation. Shrink tube wrap and all ok...

Didn't finish and hit send by mistake... 3. Pulled cruise control unit under fuse box a. with ignition off, ground to 3S, got 1.3 ohms (not 0 ohms....) b. with ignition on, ground to 1S, got battery voltage c. with ignition on, ground to 9T, no battery voltage..... d. with ignition on, selector ON, ...

Ok, working pump installed, still no cruise control. Here's what I've done 1. Checked vacuum lines with pump disconnected from cc unit/connected to battery, pump works,holds vacuum, no leak at servo/brake switch/lines 2. Pulled stalk/selector switch a. power to yellow/blue on harness b. when switch ...

Thanks all for replies. With pump disconnected and on bench, I hooked up positive to blue/black and negative to green/black terminals on pump. Took cap off to look inside too. Pump tries to spin a tiny bit when connected but stops. The white/black connector goes to solenoid inside which clicks when ...

Thanks, Lee. I'll try that to see if I have working pump. Do you happen to know what remaining wht/blk connector is for? thanks again for your help

I am trying to fix non operating cruise control and wanted to bench test the vacuum pump under battery tray. 3 wire plug (Blue/Blk, Wht/Blk and Green/Blk) Question is simply how to connect to 12v battery supply to see if pump itself is bad? Any help would be greatly appreciated. It's hard going 30mp...