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Username Post: Wiper motor fuse not working        (Topic#361076)
Posts: 22

Reg: 05-10-20
05-22-20 02:58 PM - Post#2794504    

Hi Chevy folks!

I bought a 67 impala a year ago and I'm having trouble getting my wipers to work...
The harness is working, the motor have been repaired, the switch works, the fuse is intact and the ground is good.
BUT! When i use a multimeter on the wiper fuse, one poker on ground and the other to the left side of wiper fuse, it works! "Until I remove the multimeter ofc"
So what is wrong with the fuse box? And how can I fix it?

Thanx in advance


Posts: 259

Loc: Connecticut
Reg: 12-01-07
05-22-20 05:19 PM - Post#2794509    
    In response to SunsetImpala67

First. with the ignition switch on, see if you have 12 volts on the yellow wire at the wiper motor measuring from the yellow to a good ground but not on the motor housing. If you do, next you must make sure that the wiper switch housing is grounded well to the dashboard itself because the speeds are controlled by the ground side of the motor not the positive lead. see what happens. One other thing to check is the fuse terminals, they are usually corroded or rusty, so remove the fuse itself and clean the contacts with the ignition switch off of course.

Don S.
1968 SS427 x 4
1968 Impala L-72
1969 Chevelle SS396

Posts: 22

Reg: 05-10-20
05-22-20 06:30 PM - Post#2794513    
    In response to 68SS427

Yeah the yellow wire supplies power.
The switch works as it should when I do the thing I mentioned with the multimeter on fuse OR give the motor power with a wire directly from the battery.
This realy makes no sense to me
Power wire supplies power but dont work "but works with wire directly from battery"
Or if i put the multimeter on the fuse.

Blu 67 
Posts: 448
Blu 67
Loc: Oshawa, Ontario Canada
Reg: 10-15-05
05-23-20 09:57 AM - Post#2794549    
    In response to SunsetImpala67

Take a 1/2 inch wide fine sandpaper and place the sandpaper and fuse in between the clips, draw the sandpaper out and repeat until the contacts on both ends are clean. Swap the fuse end to end and then check your voltage with the multimeter.
Replace the fuse with a known good one.

67 Impala 2 Dr Hrdtp,Bought in 1979*283 Edelbrock intake,ceramic headers,3 speed TH350 auto.,aluminum radiator,350 Crate motor Daily driver in the summer. 68 station wagon frame .2017 Classic Auto Air Global Western Upper arms,strut rods.

Posts: 22

Reg: 05-10-20
05-23-20 10:01 AM - Post#2794550    
    In response to Blu 67

Ill give the fuse clips a Good cleaning and sanding again later today. Anything in the back of the fuse box that can be broken?


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