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Fuel level sender wiring
smart51 - 5/8/05 at 06:46 PM

I have a VDO fuel gauge and sender. The both came without instructions. The gauge has terminals for the lamp - easy, plus 3 others, labled +, - and S. 12V, ground and signal I should think. The fuel gauge is just a variable resistor with 2 terminals. Should this connect to 12V or ground?

stevebubs - 5/8/05 at 08:08 PM

senders are pretty much always relative to ground.

[Edited on 5/8/05 by stevebubs]

Dusty - 5/8/05 at 08:13 PM

+ is 12v ignition on supply.
- is earth.
S is to one terminal on sender.
Other sender terminal is to earth.

nanosleep - 5/8/05 at 08:16 PM

quote:
Originally posted by smart51
I have a VDO fuel gauge and sender. The both came without instructions. The gauge has terminals for the lamp - easy, plus 3 others, labled +, - and S. 12V, ground and signal I should think. The fuel gauge is just a variable resistor with 2 terminals. Should this connect to 12V or ground?


Plug the gauge into 12V (+ terminal) and ground (- terminal). Leave the signal terminal unconnected. Then measure the voltage on the signal terminal with respect to ground. If it reads 12V then I believe you should connect the signal terminal to your sensor, and the other side of the sensor to ground.

HTH
-Andy

smart51 - 6/8/05 at 06:38 PM

Excelent! thanks.