LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Combination meter/ Rheostat

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Old 05-03-15, 04:05 PM
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Dcelone53
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Default Combination meter/ Rheostat

(Please pardon any naivety)

So I'm putting the comb. Meter from a 92 ls400 in my hotrod. I completely cut the harness up and made my own connectors to cut down in the things I don't really need. The thing is I don't have rathe rheostat. I'm assuming this is why the meter won't loght up becuause the circuit is open.

Question is, before I go out and get one, is there anyway I can wire around it? The light control isn't really essential to what I am doing.

Thanks in advance, anymore info can be given if needed

Cheers!
Old 05-03-15, 04:57 PM
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Gene01
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If it is only a rheostat (which seems likely), you could just short the circuit.
Before you do, you might try inserting a 12V bulb to limit current. When turned on, the inserted bulb should glow dimly, and the lights in the panel should also light up dimly. This assumes that the only things on the circuit are incandescent bulbs. It will not work with LEDs, etc.
Old 05-03-15, 05:22 PM
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Dcelone53
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Originally Posted by Gene01
If it is only a rheostat (which seems likely), you could just short the circuit.
Before you do, you might try inserting a 12V bulb to limit current. When turned on, the inserted bulb should glow dimly, and the lights in the panel should also light up dimly. This assumes that the only things on the circuit are incandescent bulbs. It will not work with LEDs, etc.
go figure, im playing with the wires and got it to light up, been confused for hours and it randomly turns on...

Thanks lol
Old 05-04-15, 11:27 AM
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Gene01
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If it only lights up when the wires are shorted (jumper across the rheostat?), it would indicate an intermittent connection, very likely a ground.
If it lights when it shouldn't, it indicates a short somewhere on the "hot" side.
Either will require some time and effort to isolate.
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