Orlee, We almost have it !!! You were right, the power to the motor from 17-4 is weak under load. I tests fine with a meter but doesn't do the job when motor runs. I spliced into the 17-4 wire with a hot lead from the fuse box. Ran the wipers, everything worked and stopped exactly where it should. If I could find and fix the break in the original line it would be ideal but since the harness is hidden/ buried I kind of doubt I'll be able to do that. If not, unless you have a better suggestion, I'll cut the old 17-4 wire near the wiper motor, splice in a 10 amp fusible wire and run it to the front distribution box. With that the problem would be fixed.

I could never have solved this without your wonderful help, you are the best. Thank you very much.

Jerry

 

Hi Jerry,
Glad you did it. With so much dedication - you can overcome any problem

btw - checking with voltmeter is not advised with automotive checks - since it does not load the tested terminal. This is why automotive electrician use lamp to test the hot signal.

Running alt wire is perfect. the old one failed - why use it? If the new wire run neatly and protected from shorts and future mishaps - no problem. Glad you did solve the issue, I was starting to get worried as well...

 

I had the same problem with my xj40 and it turned out to be an inline fuse specifically for wiper park which was situated under glovebox. It did not show up on vcm as blown fuse either

 

I FIXED MINES, one wire its a red one has constant live even when its switched off, as far as i can remember its a red wire, so check them all with ignition on and wiper working, if one of your red wires not showing any life cut it and join a direct live and try your wiper!