1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Wiper Gremlin

Discussion in 'Electrical & Audio' started by Clafoun, May 18, 2021.

  1. Clafoun

    Clafoun Junior Member

    Posts:
    5
    Likes Received:
    4
    Joined:
    May 13, 2021
    Location:
    Texas
    First Name:
    Charles
    Truck Year:
    1985
    Truck Model:
    1500
    Engine Size:
    350
    Strange little oddity on my 85… when running, anytime I slide the AC control to the off position my wipers cycle once and then park.. any thoughts?
     
  2. gmbellew

    gmbellew Full Access Member

    Posts:
    172
    Likes Received:
    154
    Joined:
    May 27, 2018
    Location:
    Kansas city
    First Name:
    glen
    Truck Year:
    1990
    Truck Model:
    suburban 1500
    Engine Size:
    350
    somewhere the ac wiring is touching the wiper wiring and giving it power? most likely two wires are touching without insulation somewhere....look at the wiring diagrams and loom locations and see where things get close....probably not until the firewall and could be on the engine bay side.
     
  3. Clafoun

    Clafoun Junior Member

    Posts:
    5
    Likes Received:
    4
    Joined:
    May 13, 2021
    Location:
    Texas
    First Name:
    Charles
    Truck Year:
    1985
    Truck Model:
    1500
    Engine Size:
    350
    Thanks for the input… although that’s the first thing I tried.. even going so far as to running looms around both harnesses.. no such luck for an easy fix.
     
  4. gmbellew

    gmbellew Full Access Member

    Posts:
    172
    Likes Received:
    154
    Joined:
    May 27, 2018
    Location:
    Kansas city
    First Name:
    glen
    Truck Year:
    1990
    Truck Model:
    suburban 1500
    Engine Size:
    350
    you may have to get a meter out and see if it is the hot or ground on the wipers getting energized when you move the switch. or you may be able to disconnect the wiper wiring at different locations and see if it stops the issue. that may help narrow it down.
     

Share This Page