Wiper not working on 1994 f350 - Diesel Forum

durlecs · 07-17-2008, 07:30 PM

Hi everyone,

The windshield wipers on this truck are not working at all. I don't hear any clicking from a relay and also the washer fluid sprayer is not working. I was looking through the forum and saw that there is a box that often has breaks or cracks in the circuit that can be re soldered. I was looking all over for the box under the dash and particularly above the parking brake, but was unable to find it. If anyone knows exactly where that black box is located, I would be very grateful if you could post it. Also, I think it may be that the wiring is bad somewhere. I replaced both the multi switch and the wiper motor with no success. If anyone has a wiring diagram for the wiper circuit, it would also be greatly appreciated. Thanks for all of the great info on this site. My friend just got his truck and I am helping him fix it up. I have been able to get lots of useful information from everyone freely sharing here.

Gratefully,
Shane

chuckster57 · 07-17-2008, 07:39 PM

I have the book showing wiring digrams. Just PM me and I will get your e-mail address and send it to you. Also look at the interval governor. I have the page that shows the picture and directions for removal. I'd be happy to scan and send that too.

cdnsarguy · 07-17-2008, 08:27 PM

Check fuses first....... then if the stalk activator is dirty you will lose control of the operations... if its not that, then the MFSwitch may be involved. If you want the complete tests/operations for the 93-4 wipers PM me your email.

danngreen · 07-20-2008, 08:12 PM

Follow the wires from the wiper switch, they T-off and one side goes to a black controller box.