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Mystery Harness with cruise control

hakukamana

NAXJA Forum User
Location
Captain Cook
1988 Jeep XJ Wagoneer, I have a harness which is part of the cruise control system, or it was at least part of the harness. I don't know what its for? It had a tag on it P05010002AA. It is attached to the shifter button, when I push on the shift release button I can feel the cable moving inside the sheath. Location is directly under the ECM, along the center console side, along the firewall then up the column. The harness blue/blk tracer connects to the brake pedal switch, white/blk tracer with green connector, connects to the ACC plug on the fuse block, then there is a white connector that plugs into the shift button release cable. It also has a mini 5 pin relay as part of the harness. New to the forum so I don't really know how to post a picture of what I am looking at.
 
That’s a newer part number if I’m not mistaken. Did it have the shifter lockout recall? Possibly a newer shifter assembly?
Aftermarket Alarm?


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It has something to do with the shift cable and the release button. But it was part of the cruise control harness. There is a connector on the shift cable that goes up the column. It has a relay, a power feed, the cable connector and then it feeds back out of the relay to the brake switch. I have no idea what it does or what its function is????
 
Most of what you described is a system that forces you to have the shifter in Park or Neutral to start the engine. Newer rigs you need to also have a foot on the brake, triggering the brake switch to start a rig as well.

The cruise system had a secondary brake switch, operated using vacuum and power IIRC, and it powered a yellow Cruise control computer box just under the dash steering column so it might have been part of the harness in the same location under the dash.
 
Yeah, I was talking with him at another forum and he got the Cruise control working.
That mystery harness had nothing to do with it from what I remember. I believe that harness is used for integrating after market alarms in old XJ.





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