OK so I cannot find a diagram... I have a 1990 s10 Blazer and the wiper fuses keep blowing. Currently a 20 was in there, it blew after 2 full swipes, I put a 10 in that lasted until I turned it off then back on.

What size fuse SHOULD be in there and if 20 is correct, what should I do?

Thanks!

 

I put a 25A in, seems to be working

 

Interesting. I thought the wiper circuit was on a circuit breaker and not a fuse?

 

there is a fuse clearly marked WIPER so I suppose not lol

 

90Conan
For your year of truck 25 amp is correct

 

That would explain why the fuses kept blowing! The previous owner didn't know much about trucks.

 

If you get a good service manual the answers to questions like this are right in there. That's where I found it. Took about 30 seconds. You also might want to check the rest of the fuses. Who knows what's in there. It'd be worse if a fuse of too high a rating were in some spots.