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-   -   fuel level sending unit wiring ??? (http://www.clubcobra.com/forums/classic-roadsters-ii/37903-fuel-level-sending-unit-wiring.html)

Curt C. 01-18-2003 12:51 PM

fuel level sending unit wiring ???
 
OK, I received the custom Fuel Safe fuel cell. I ordered it with a 0-90 ohm GM sender. The sender in the cell has 3 connections: ground, sender and positive. The CR wiring harness only has two wires back there: ground and sender. What do I do? run a switched positive source to the positive connection?? I do not know squat about wiring. Thanks

petek 01-18-2003 02:14 PM

Ground and signal. Leave the positive disconnected.

OK, it's just a guess.

Tell ya what, wire the thing up (without installing the gas tank), then wiggle the sender and see if it works. Don't forget the ground line!

dscott 01-19-2003 10:11 AM

I would call fuel safe and ask them about the connection. It doesn't seem very safe to have a voltage source at the tank, that's why all sending units that I know of use the ground circuit with power at the gauge. Of course most new cars have the pump running in gas so I guess they know what they are doing.
Don

Curt C. 01-20-2003 11:44 AM

Fuel Safe forgot to include the sending unit directions. No flame against them, they have been great to work with. The sending unit is electronic and therefore does require a positive connection. Thanks for the help.


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