windshield wipers

[BALDYLOX]

I have a '69-'70 fj-40 that has electical gremlins. I changed out my rusted MI tub for a solid CA one and reused my old wiring harness because not all of the '70s was there. I've since had no windshield wiper functioning, even with 2 different wiper assemblies. Any ideas? Oh yeah, I'm new to the forum.

 

[hoop5]

good luck-----going through that same nightmare.
Haven't looked at his setup, but one of my buddies ran a ground wire from his wiper motor and it worked. It might not be grounded good to the windshield frame. Just a thought.
Good luck

 

[IDave]

Yes, I agree on looking at the ground thing. I recently had to polish up my contact, which turned out to be the windshield clamp on my FJ45, to get my wipers to work.

 

[miker]

I agree. Run a test ground or you could also turn on wiper switch and use a DVM to check for 12v at motor using window frame as ground for DVM and then if no voltage just move the DVM ground lead to the body, frame, or even battery to see if you're getting 12v with these different ground sources. It will also allow you to see if the problem is perhaps the switch or something else besides a bad ground.

And welcome. You are just over the river from me.

 

[BALDYLOX]

Which River?

I agree. Run a test ground or you could also turn on wiper switch and use a DVM to check for 12v at motor using window frame as ground for DVM and then if no voltage just move the DVM ground lead to the body, frame, or even battery to see if you're getting 12v with these different ground sources. It will also allow you to see if the problem is perhaps the switch or something else besides a bad ground.

And welcome. You are just over the river from me.

Which river? I'm willing to cross a few so I can get my wipers working again. Now would be a good time to have them. Should I just put a manual hand crank on them? I've tried the auxiliary ground thing, but not using a meter of any kind. I'm not very well aquainted with tracing electricity; I don't like zaps.

 

[Throttleman_610]

I have a 71 FJ40, there is a very short and small gage wire coming out of the wiper motor that looks like it was soldered somewhere on the motor. Would someone be so kind as to take a close up photo of the motor for me. (No manual for the 71 YET)

Thanks in advance.

JB

 

[NJFJ40]

I have a '69-'70 fj-40 that has electical gremlins. I changed out my rusted MI tub for a solid CA one and reused my old wiring harness because not all of the '70s was there. I've since had no windshield wiper functioning, even with 2 different wiper assemblies. Any ideas? Oh yeah, I'm new to the forum.

Did you check the wiper switch itself (not just its ground)? Its a rather simple assembly that you can take apart and test. I suggest you get familiar with basic use of a digital multi-meter. You will be amazed at what you can do with one of these just using the Ohm (resistance) setting.

I had issues with my switch from my 02/80 FJ40 and it was easily repairable with a little multi-meter testing. Again, on my 80 FJ40, the switch has two settings (high and low). As you pull the knob out, the switch grounds and enables power to flow to turn on the wipers. If you can't get high or low to work, then you probably have a general ground issue to the switch as others have suggested (assuming your wiper motor worked before and is still good).

Disconnect the wiper switch and snap a pic and post.

AndrewT

 

[65swb45]

NJFJ40 has a good point. Maybe you should try and hotwire the motor as well.

I had a problem with mine years ago that turned out to be neither the motor or the switch, but the cable that runs between the two wiper arm shafts. It was frozen.