Dont know what plugs are for?

[Darrman]

Ok, I am putting the windshield washer setup back in my truck, keep in mind that none of it was included when I bought the truck. I have a new reservoir and am trying to get the correct pump. However I need help with the factory wiring plugs. I assume the two wire plug I am holding in my hand in the pic is the correct plug, but what are the other plugs in the pic used for? They are on the same section of harness. I thought maybe for ac or something.
Thanks!

[mk]

Looks like maybe they're for hooking up the emission control sensor used on some 70-72 trucks, part of this system:




mike

[Darrman]

That would make sense, but my truck is a '69, pre-emissions. As far as I can tell its the original wiring.

[Thunderfoot]

I don't see the picture with your hand in it with a plug... But the bottom picture you have there with the group of 3 plugs, I believe those are for the rear lights (brake/turn) [4 wire plug], fuel sending unit [1 wire plug], and break warning switch [2 wire plug]. They should go down under the master cylinder, under the truck.
Here is a picture of my Dirty Project and you can see the group of connectors under the break lines under the master cylinder. The wires that are running forwards from that group is the one for the washer bottle.
If you have questions on these plugs let me know what the colors are of the wires are on each and I can figure them out for you.