How can one bench test a fuel gauge in cluster with cluster out of car ? wires are good, connections are good, all other gauges work perfectly,am using RT engineering dash 5v regulator,both old and new sending units confirmed working.In testing obviously I don't want to burn out gauge. Thanx.
Gauge testing 69 valiant
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You have a fuel sender that's out?
Wire in series to a 12V battery:
Battery---limiter (must be grounded) gauge and sender, ground to battery neg
Before you hook up the sender in the circuit check with an accurate ohmeter, and "lay" it so it will stay put. You want to check with the sender set to 10-13 ohms for full, 23-25 ohms for 1/2, and 70-75 ohms for empty. I assume you have the cluster out? You can rig the fuel sender to the temp gauge and check it as well.
Set the cluster/ gauge up at the proper physical angle, and give it plenty of time to stabilize.
Wire in series to a 12V battery:
Battery---limiter (must be grounded) gauge and sender, ground to battery neg
Before you hook up the sender in the circuit check with an accurate ohmeter, and "lay" it so it will stay put. You want to check with the sender set to 10-13 ohms for full, 23-25 ohms for 1/2, and 70-75 ohms for empty. I assume you have the cluster out? You can rig the fuel sender to the temp gauge and check it as well.
Set the cluster/ gauge up at the proper physical angle, and give it plenty of time to stabilize.
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