Category: 
In case “someone” helpfully discarded the factory wiring harness plug and then replaced your Chevy wiper control switch with another that doesn’t in anyway resemble the correct part, here are the 1968-1972 terminal wiring assignments for:
| Beginning Year: 1968 |
| Ending Year: 1972 |
| Make: CHEVROLET |
| C10 PICKUP |
| C10 SUBURBAN |
| C20 PICKUP |
| C20 SUBURBAN |
| C30 PICKUP |
| K10 PICKUP |
| K10 SUBURBAN |
| K20 PICKUP |
| K20 SUBURBAN |
| K30 PICKUP |
| Make: GMC |
| C15/C1500 PICKUP |
| C15/C1500 SUBURBAN |
| C25/C2500 PICKUP |
| C25/C2500 SUBURBAN |
| C35/C3500 PICKUP |
| K15/K1500 PICKUP |
| K25/K2500 PICKUP |
| K35/K3500 PICKUP |
The Brand is: American Autowire and the Manufacturer’s Part Number is 01993432
Of the two parallel terminals, the one located to the outside is for the Black wire, the other is for the Dark Blue wire. The third terminal which is offset (not parallel) is for the Light Blue wire.
You are welcome.
