Guys i have an 85 chevy k 30 military package, and am having an issue with wiper speeed. everytime i turn the wipers on high they stay the same speed. is there a fuse or a relay im missing or maybe some wire in the column is bad
thanks for the help

Do you know if it ever had more than 1 speed? I'd assume so. One way to check, if not too much of a pain, is to disconnect the feed wires nearest the wiper motor. If it has say 3 wires, it's probably a two speed. Figure out which is ground & feed pos battery power into the other two wires (one at a time) if it operates at 2 different speeds then, you know it's not the motor. If the design uses resistors, however, it's possible that it will only have one positive feed line & the various speed options comes from different amounts of resistance upstream of your wiper motor.

When I re-wired my pig, I used a toggle switch & fuse & just hooked it up to the high speed. All or nothin.

Its the motor. Controls all the intermitencey (sp) and speeds. I found that out the hard way after replacing the so called wiper speed/intermitency control box. That was $80 from the dealer and a non return item...


BTw make sure you ground the wiper motor housing or it will overheat.

thanks for the responses yeah i thought it could be the motor just unsure thanks guys.

I found that out the hard way after replacing the so called wiper speed/intermitency control box. That was $80 from the dealer and a non return item...

Just as an aside, you can get both items at Napa. Echlin box, but same manufacturer (Cherry) as OEM.

Alex.