66 GMC Wire harness replacement

[cojeeper]

hi all,

Been Lurking here for awhile now and decided to ask you all for some help.

currently working on de-pimping a 66 GMC. previous shop removed the wire harness and attempted to install an American Autowire kit. Got it all wired up but the wiper switch and the Heater.

Wiper switch has 4 connection on the switch. wiper motor has 3 male blade connectors on the side grouped together with one more off by itself. also has two wire up top on the front. guess it is for the pump.

heater has a 3 blade connector with one separate orange connector. Did not notice that the switch was tucked in the back and thought it was a pull switch for the side vent. I assume that the connection my itself is power into the switch.

I have the 66 assembly manual but all the diagrams are for a 3 way connection. any help would be appreciated.

 

[cojeeper]

guess I should post a pic of the wiper switch

 

[Robert Haas]

Per the American Autowire switch I have that uses the factory color coding

Wiper switch

WIRE FUNCTION CHART

Yellow 12 volt power

Black Motor low speed (On two speed wiper motor)

Dark Blue Washer pump ground

Lt Blue motor hi speed (on a two speed wiper motor)

White 12 volt power from fuse panel


Can't really help you on the heater, Mine has the the 3 slider used on the delux option. sorry

 

[cojeeper]

thanks for the info