[Healeys] wiring or testing of electronic Tach question , testing of fuel gauge

Bob Haskell rchaskell at earthlink.net
Sun Oct 19 18:45:12 MDT 2008


Jerry,

The fuel gauge sending unit is a variable resistor - 0 to 100 ohms.  If you 
have an electronics supply store near by, pick up a couple of resistors in 
that range.  Disconnect the lead from the sending unit.  Ground the lead 
and turn on the key - the gauge should read zero.  Unground the lead and 
the gauge should go to full.  Attach a resistor between the lead and 
ground.  The gauge should read the ratio of the resistance divided by 100. 
  If you have a 50 ohm resistor, the gauge should read half full.

Bob

Jerry Costanzo wrote:

> Is there a bench test for the BJ8 fuel gauge?   I measure 62 ohms across the
> connectors.
> 
> 
> Thanks for your help.
> 
> Jerry
> 
> BJ8


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