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Author Topic: Testing fuel sending unit  (Read 1924 times)

Offline Cory

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Testing fuel sending unit
« on: August 01, 2014, 02:37:36 PM »
Does anybody know which terminals on the headlamp switch do you connect the pink wire and ground wire going to the sending unit in order to test it? I read an old post from HAULIN IT that said you could use an old headlamp switch as a variable resistor and use it in place of the fuel sending unit to see if the gauge moves or not, but there are several different numbered terminals on the dimmer switch. I'm not sure which terminals to use. Any help would be appreciated!!

86 C10 350/700r4 single tank under the driver
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Online bd

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Re: Testing fuel sending unit
« Reply #1 on: August 01, 2014, 04:03:21 PM »
Use the two terminals circled in red, below.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Cory

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Re: Testing fuel sending unit
« Reply #2 on: August 01, 2014, 04:13:01 PM »
Thank you bd!!
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Offline Irish_Alley

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Re: Testing fuel sending unit
« Reply #3 on: August 01, 2014, 11:00:33 PM »
whats your gauge reading?
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
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