Sender unit question

[gazzaw]

Hi

I am in process of converting our C60L Wrecker from 6v to 12v and the only thing still to do is the 2 fuel tank sender units. Can anyone tell me if I need to swap these as well as the gauge to 12 volt ones or would originals suffice with req to fit a resistor in line or similar.

Gary

[Bob Carriere]

Both tank sender units will need replacing with a 12 volts sender..... about $50 US dollars........ and they will bolt right in to your tank..... it they will look slightly different

In your dash just before the fuel gauge you will need a voltage reducer from 12 to 6 volts....... bolts right on the stud of the gauge....worth about $15 US.

Have you. Insidered cleaning up the inside of the fuel tank and possibly installing a tank liner/sealer while at this stage?..... now is the time to do it.

Wiring...... the existing wiring if not all dried up should be adequate........ I used a new wiring harness made of 16 gauge wires.

Good luck.
Cheers

[gazzaw]

Thanks Bob

will need to try and source these items as in UK

gary

[Lynn Eades]

Bob, If the 6 volt tank units are good, will they not still work with the original gauge if the correct rated resistor is fitted before the gauge.(power feed side)

[Grant Bowker]

My understanding is that the original senders should work. Ohms are Ohms. The "special" part about Chevs is that they used a different resistance range than either their contemporary Ford or more modern Chevs. I think the resistance range used on Chevs with the commercial gauge cluster and the round instruments were the same 0-30 Ohms. The important part is that the gauge and sender need to match (hence the voltage reducer at the gauge to make it match the original sender).