| Fuel tank wiring loom [message #198868] |
Mon, 18 February 2013 10:28  |
Jack Ramsey
Messages: 82
Registered: December 2012
Location: Tulare, CA
Karma: 1
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I have wiring diagrams, faded old real factory service manual and multiple Fluke multi-meters.
In the drivers side of my 1975 Palm beach there is a fuel selector valve and the 3 wires, black, tan-white and tan, from the connectors (connectors in place) are broken off about 12 in forward and were zip tied to the fuel "manifold" running forward to what I assume is the filler assembly.
My question is which direction do these run forward to the dash selector switch? I am assuming they got caught on an obstacle and got broken. I see nothing within the radius of the cut to give me an hint.
Loom rearward to the fuel pickups and senders intact.
Thank You,
Jack
Jack Ramsey
Tulare, CA
TZE165V101526
1975 Palm Beach
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| Re: Fuel tank wiring loom [message #198878 is a reply to message #198868] |
Mon, 18 February 2013 12:26  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Jack Ramsey wrote on Mon, 18 February 2013 11:28 |
I have wiring diagrams, faded old real factory service manual and multiple Fluke multi-meters.
In the drivers side of my 1975 Palm beach there is a fuel selector valve and the 3 wires, black, tan-white and tan, from the connectors (connectors in place) are broken off about 12 in forward and were zip tied to the fuel "manifold" running forward to what I assume is the filler assembly.
My question is which direction do these run forward to the dash selector switch? I am assuming they got caught on an obstacle and got broken. I see nothing within the radius of the cut to give me an hint.
Loom rearward to the fuel pickups and senders intact.
Thank You,
Jack
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Jack,
There are the two harnesses that meet at the selector valve.
One is the harness runs forward to the selector switch at the dash. Mine runs along under the floor in clips near the frame rail. This harness comes to an end near the selector valve with two connectors, a mate a two wire connector and a single connector for the selector valve. The selector valve also needs a ground. I have never followed it forward of the rear of the engine room. It does come thought the same path as the fuel and fill vent lines.
The other harness that collects the two sending units and grounds (4 wires total)for same to a single two wire connector and the single ring for the sender ground. Be sure that the ground wire of this one on on something that will be an adequate ground.
While you are under there, pick up a ground and measure the resistance of the two sending units. If they don't show something sensible between 0~90, you do have a problem.
I hope this is a help.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Fuel tank wiring loom [message #198976 is a reply to message #198868] |
Mon, 18 February 2013 22:03 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Jack Ramsey wrote on Mon, 18 February 2013 10:28 |
I have wiring diagrams, faded old real factory service manual and multiple Fluke multi-meters.
In the drivers side of my 1975 Palm beach there is a fuel selector valve and the 3 wires, black, tan-white and tan, from the connectors (connectors in place) are broken off about 12 in forward and were zip tied to the fuel "manifold" running forward to what I assume is the filler assembly.
My question is which direction do these run forward to the dash selector switch? I am assuming they got caught on an obstacle and got broken. I see nothing within the radius of the cut to give me an hint.
Loom rearward to the fuel pickups and senders intact.
Thank You,
Jack
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On my '74, and as shown on the wiring diagram for an HEI '75, the fuel selector wire and the tank sender wires run from the instrument panel in the body side harness (connector square 10) and pull out of that harness and drop through the floor opposite the fuel selector valve outside of the frame rail. From there it runs to the selector valve and over to the fuel tanks. There is a two position connector listed as "left frame rail ahead of main fuel tank". The selector valve is grounded through it's mounting feet to the frame. The fuel level senders have a ground wire harness that connects to the frame.
So go looking outside the LH frame to see where the wires have broken off. If you want pictures and/or measurements let me know.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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