The Diesel Stop banner
Cancel
Create thread New Garage Forums

Wiper not working on 1994 f350

Jump to Latest
13K views 6 replies 7 participants last post by  Oleblue94  
D
#1 ·
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
 
Save
Reply Quote Like Like
#2 ·
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.
 
Save
Reply Quote Like Like
#3 ·
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.
 
Save
Reply Quote Like Like
D
#4 ·
Follow the wires from the wiper switch, they T-off and one side goes to a black controller box.
 
Save
Reply Quote Like Like
#5 ·
Hey there this is Bryan. I noticed you replied to a gentleman on this forum stating you had the wiring diagrams for the 94 f 350 wiper motor.

I purchased the truck and they never worked.

Come to find out the wiring harness that should be by the driver's side firewall is gone.

I can hear the wiper relay box clicking when I turn the switch on.

Any info you can spare would be greatly appreciated.
 
#6 ·
Post pics of the damaged wiring harness. All F-series (regardless of engine or chassis weight) of a given year have the same wiper wiring:

(click this text)
 
Save
Reply Quote Like Like
The Diesel Stop
posts
2.7M
members
219K
Since
1999
A forum community dedicated to all Ford Diesel owners and enthusiasts. Come join the discussion about PowerStrokes, performance, modifications, troubleshooting, towing capacity, maintenance, and more!
Full Forum Listing
Explore Our Forums
99 & up 7.3L Power Stroke Engine & Drivetrain 6.0L Power Stroke Engine and Drivetrain 99 & up Upgrades and Aftermarket - 7.3L Engine Power Strokes 1994-1997 General 7.3L IDI Diesels (Not Powerstrokes) 1988-1993