Washer pump connector/harness

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desertdog1

Junior Member
Joined
Feb 5, 2021
Posts
14
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5
Location
Tucson, AZ
First Name
Joe
Truck Year
1983
Truck Model
C20
Engine Size
454
I need a connector/harness for the washer pump on my 83 C20. My connector broke into 2 pieces. Where can I get this harness? I can’t find a match in the AC Delco pigtail catalog pictures. Also, which wire goes on which spade terminal on the washer? Does the red wire go on the right or left terminal as you look at the installed washer from the front of the vehicle? I may have to use the broken connector and I cannot determine orientation. Thanks.
 

NLD79K10

Full Access Member
Joined
Sep 22, 2025
Posts
133
Reaction score
138
Location
Netherlands
First Name
Lars
Truck Year
1979
Truck Model
K10
Engine Size
350
I have only seen the connector as a loose item at Newboyz Squarebody Rescue, but it isn't cheap, though still cheaper than a new engine harness which is the only real alternative as I have not seen a pigtail or other loose connector for the 1978-1984 washer pump anywhere else:


It should be the same combination wiper motor/washer pump as on my K10, the polarity of the wires doesn't really matter as they connect to the coil of a solenoid that pulls on a steel pawl and as such isn't polarity sensitive, but if you want them factory correct, the passenger side terminal is ground.
 
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