Markbo Posted December 6, 2014 Share Posted December 6, 2014 I have Auto Meter electric boost and oil pressure gauges installed. Have a couple of wiring questions. I am going to wire using a fuse tap. This will not allow dimming with dash lights. 2 questions: Can I wire both gauges red (power) & white (lighting) to the same outlet? 2nd if I do want dimming, which wire in that dimming rollwe switch plug do I tap into? I havent opened it up yet but it looks like there are 4 or 5 wires in that plug. Link to comment Share on other sites More sharing options...
rhino6303 Posted December 6, 2014 Share Posted December 6, 2014 I have Auto Meter electric boost and oil pressure gauges installed. Have a couple of wiring questions. I am going to wire using a fuse tap. This will not allow dimming with dash lights. 2 questions: Can I wire both gauges red (power) & white (lighting) to the same outlet? 2nd if I do want dimming, which wire in that dimming rollwe switch plug do I tap into? I havent opened it up yet but it looks like there are 4 or 5 wires in that plug. I tapped the ignition fuse for my wideband and oil pressure gauges so they are only on with the ignition on (not acc) and tapped the tail lights/clearance fuse for the gauge dimmer. Good luck. This is what I've done. I now have three gauges on the same circuit (fuse taps) and have never had an issue. If you wire the dimming circuit the way I did it will dim with your dash lights. Link to comment Share on other sites More sharing options...
Markbo Posted December 6, 2014 Author Share Posted December 6, 2014 Fantastic. Just what I needed to know. Thank you! Link to comment Share on other sites More sharing options...
Markbo Posted December 8, 2014 Author Share Posted December 8, 2014 This little car is so odd. 2 more questions. How does hooking into tail lights allow dimmer to work? Which fuse is ignition? Ign is not listed in owners manual. Link to comment Share on other sites More sharing options...
Markbo Posted December 9, 2014 Author Share Posted December 9, 2014 I got them installed and wired up. Just picked different fuses since I couldnt see any ign fuse. Dark with no lights and lit up with lights on. No actual dimming but I suppose that will do. I still have to set the gauges for range & warnings. I notice at idle the red light comes on as oil pressure drops below 30 psi. OEM light does not come on. Of course its not set yet, but what are good operating min/max oil pressure range and what should I set the gauge warning light at? Also what boost pressure should I set boost gauge? Just whatever it maxes out at or 1-2 over or what? Link to comment Share on other sites More sharing options...
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