Engine Harness Wiring
Thread Starter
Intermediate
Joined: Jan 2007
Posts: 31
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Engine Harness Wiring
I am in the middle of a resotration on a 1970 and hooking up a new engine wiring harness. I am having trouble trying to get the wiper motor running and the blower motor.
I have two wiring diagrams one from here and one from letric limited that I ordered with the new harness. The old harness I coud not reference because the guy who blasted the engine compartment decided to remove wires wihtout marking them, not happy about that but oh well.
My question on the wiper motor is there is
3 prong connecter Lt Green, Yellow, Lt Blue. What is this and what voltage should I expect on these?
Also there is Yellow and D Blue that connects to coil on front one yellow has +12 blue one I assume is gnd.
There also is Black stake on, connecter to gnd.
There also is Red wire that was disconnected coming from back of housing? I have a red/white that could go to that or I have Red with Dark Blue/Purple? I do not have no limit switches or a wiper door since I have a long hood. Prints don't seem to match. One shows red/white the other from lectric limited shows
Also the other one is the blower motor. There are 3 conncections
Orange connecter, Double black connecter, and a another wire that was not connected where does this phantom wire go?
Any help would certainly be much appreciated. Even is somebody had some pics of theres maybe
I have two wiring diagrams one from here and one from letric limited that I ordered with the new harness. The old harness I coud not reference because the guy who blasted the engine compartment decided to remove wires wihtout marking them, not happy about that but oh well.
My question on the wiper motor is there is
3 prong connecter Lt Green, Yellow, Lt Blue. What is this and what voltage should I expect on these?
Also there is Yellow and D Blue that connects to coil on front one yellow has +12 blue one I assume is gnd.
There also is Black stake on, connecter to gnd.
There also is Red wire that was disconnected coming from back of housing? I have a red/white that could go to that or I have Red with Dark Blue/Purple? I do not have no limit switches or a wiper door since I have a long hood. Prints don't seem to match. One shows red/white the other from lectric limited shows
Also the other one is the blower motor. There are 3 conncections
Orange connecter, Double black connecter, and a another wire that was not connected where does this phantom wire go?
Any help would certainly be much appreciated. Even is somebody had some pics of theres maybe
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
willcox has a good tech paper on wiper motors. the red/white wire goes to the red wire that comes out behind the wiper motor. the double black wire at the blower is the ground. can't remember right now about the other wires.
jeff
jeff
Melting Slicks
Joined: Mar 2005
Posts: 2,095
Likes: 299
From: Midlothian VA
Did you connect the ground wire?
There's a black wire that runs the length of the firewall harness.
It connects to the wiper motor and blower motor before running down to the large starter attaching bolt where it provides a ground to the engine block.
There's a black wire that runs the length of the firewall harness.
It connects to the wiper motor and blower motor before running down to the large starter attaching bolt where it provides a ground to the engine block.
Thread Starter
Intermediate
Joined: Jan 2007
Posts: 31
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Yes the black double wire is connected up along with the orange on the blower motor, but there is another wire coming out that goes nowhere?
I am going to check the orange wire and see what voltage is on there as I move the switch from low to hi
I am going to check the orange wire and see what voltage is on there as I move the switch from low to hi
Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
