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Old 04-11-2004, 01:18 AM   #1
henzly23
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Join Date: Apr 2003
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2015 Impreza Hatch
DGM

Default Gauges hooked up to dimmer.. will this cause problems?

I installed Blitz AC gauges this week(Boost, Oil Temp, EGT) and tried a couple wiring methods. The one i decided to stick with was running the gauges lighting through the dimmer to dim the gauge lights with the rest of the interior lighting. My only concern came when testing them out..

I don't have the temp sensors for EGT or Oil temp hooked up yet so I am not getting any readings to display. However when I dim the lights in the car the needles on those two gauges move along with the changing current flowing to the lights. My questions is will this behavior disappear when the temp sensors are hooked up, OR will dimming the gauges equate to inaccurate temp readings? Not sure if anyone else has ran across this problem or had similar questions. Tried searching but had no luck.

Matt H
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Old 04-11-2004, 02:28 AM   #2
it8ezbngrn
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You sure its hooked up right. usually it is a seperat circuit, at best they share the ground wire.
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Old 04-11-2004, 03:11 AM   #3
henzly23
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the wiring schematic shares a gound.. its hooked up right
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Old 04-11-2004, 08:39 AM   #4
Mulder
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It sounds like you have everything connected to the dimmer ground which is not a direct ground. It's a fixed positive, variable negative circuit. The ground for the metering circuits should be direct to chassis, the lighting should be connected to the controlled dimmer ground. You can refer to the factory wiring manual if you have one or can get access to one.
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