Intermittent Wipers

[david gibson]

I installed the Ford intermittent wiper switch along with the harness. It plugged into my '79's harness and I have 2 speeds (rt) and intermittent variable (lt). My problem is my washers don't work, they did before the swap. I can jump the red/wht wire to the pump wire and make the pump work. Is there a difference in wire position between my '79 J truck and the Ford switch? Anyone have a similar problem when doing this swap?

THANKS, dAVID

[david gibson]

Intermittent Wipers

Surely someone has had this problem or can help!

Thanks, David

[SJTD]

I'd look for which terminal on the switch is hot when you push it or do whatever it is that is supposed to run the pump and connect the Red/Wht wire to it. The Red/Wht that's on Terminal #7.

Maybe that switch doesn't support a washer?

[rang-a-stang]

There's a really good write up in the service manual for this (schematic for this system in on page 3T-13, pinout is on 3T-14).

Put your multimeter between pins 2 (or 6, electrically 2 and 6 are the same) and 7; it should be open. Push the switch, and it should close. If that happens, your switch is good and you need to follow the wire from pin 7 to your motor and see where you are losing your signal. If that does not happen the switch is bad/wrong.

[FLguthrie]

Hi ..... which Ford did you get the switch for and how's it going??

Thanks

Anthony

[david gibson]

Intermittent Wipers

Hi Antony, I bought the switch on the web. It came with the connecting harness. I have a switch from an 80's Bronco, maybe I'll try it.

[david gibson]

Intermittent Eipers

I did the check between pins 2 & 7, Open till washer switch is pushed, then closed. Problem is no power. The washer pump works when power is fed to it. I wonder if there is a difference between Jeep & Ford harnesses? When I plug in the 2 speed only switch I have the washers. The '79 J10 harness has pin 1 but the Ford harness and switch do not. Any suggestions?

Thanks, David

[SJTD]

There should be a Red/Wht jumper between 2 and 6 on the Jeep connector. 2 Is always hot through an internal path in the switch, the jumper provides the power for the washer pump.

[rang-a-stang]

Probably! So here is your circuit, notice there is a jumper between pin 2 and Pin 6. Do you have that? If not, make it and you should be good to go! I think Pin 1 is ground. Pin 6 is unlabled but is the input to the switch.

[david gibson]

Intermittent Wipers

Thanks everyone, I found the problem! The Jeep harness had a blank space, the Ford harness also had a blank space. The they were one hole off, moved the Ford black/green tracer moved up to blank hole washers now have power a work when the switch is pushed.

[FLguthrie]

wipers

Great thread.....I'll be tackling this soon, how do you get the switch out, do I have to remove my air condition duct?


thanks

Anthony

[rang-a-stang]

You don't have to but you should. Makes it a lot easier. The duct on the drivers side is like 3 self taping screws and it comes off.