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View Full Version : Wiring Question. noonagon 03-06-2008, 01:57 PM i know that this is probably an interior/exterior mod question but i figured you guys and gals would know more then them about wiring. i have 2 questions, where and what color i the dmming power source line behind the radio and where and what color is a 12v line with a fuse somwhere back there or anywhere. putting in gauges on my MY07 STi and need that help thank you. thedaddyb 03-06-2008, 02:45 PM Constant 12 volts: blue/red Switched 12 volts: yellow/green Illumination: Purple Not sure of the dimmer wire. And as always test wires before connecting anything. noonagon 03-06-2008, 03:26 PM Constant 12 volts: blue/red Switched 12 volts: yellow/green Illumination: Purple Not sure of the dimmer wire. And as always test wires before connecting anything. how do i test?? with a voltmeter?? illumination would be the one i want. the one that i can use to dim the gauges as the car dims the lights. thanks, so this is for an 07 sti right?? or is pretty much standard? thedaddyb 03-06-2008, 04:00 PM that's for any 07 impreza. The illumination provides a 12 volt + source when the lights are on. There should be a dimmer wire as well, but I'm not sure the color. Yes and to test use a multimeter. noonagon 03-06-2008, 04:42 PM that's for any 07 impreza. The illumination provides a 12 volt + source when the lights are on. There should be a dimmer wire as well, but I'm not sure the color. Yes and to test use a multimeter. how do i masure using one. sorry i pick things up fst and am very good at diy but just need some guidance when it comes to electrics. klinebau 03-06-2008, 05:35 PM The dimmer for Subarus works differently than in other vehicles. The dimmer is in reference to +12V instead of to ground. As a result, you will likely need to invert the dimmer for use in gauges, etc. Take a look at this thread (http://forums.nasioc.com/forums/showthread.php?p=3716610#post3716610). noonagon 03-06-2008, 06:02 PM The dimmer for Subarus works differently than in other vehicles. The dimmer is in reference to +12V instead of to ground. As a result, you will likely need to invert the dimmer for use in gauges, etc. Take a look at this thread (http://forums.nasioc.com/forums/showthread.php?p=3716610#post3716610). on that note i guess i dont need to dim lol thanks for al te help. ill let u know how it goes. jobber 03-06-2008, 06:19 PM on my 2005 with aftermarket harness, the dimmer wire was orange. noonagon 03-06-2008, 11:37 PM yea i dont have an aftermarket harness. i think ill just tap into the switched 12v power line and see how that goes. thanks for your help everyone |