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Power/ground/etc for aftermarket gauges
Power/ground/etc for aftermarket gauges
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Old 04-20-17, 01:31 PM   #1
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Default Power/ground/etc for aftermarket gauges

I bought Perrin oil temperature and pressure gauges. I'm curious if anyone has suggestions for which harness to tap into for power and dimming on the 15+ chassis. I've read many posts on this forum and others that suggest the clock harness; however, my concern is if that would hold true for the new multi-function display.

Also, is there a way to make adding additional gauges easier? Or do I need to splice each gauge into the same tapping point as they come? I've seen people mention add-a-fuse before and that seemed promising.
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Old 04-20-17, 02:00 PM   #2
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Default Re: Power/ground/etc for aftermarket gauges

add-a-fuse is what I used for power. Piggy-backed off one of the switched accessories (cant remember exactly which one, I think it was rear defrost maybe). As far as the dimming, I spliced into the dimming wire on the radio harness.
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Old 04-20-17, 02:08 PM   #3
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Default Re: Power/ground/etc for aftermarket gauges

I have a GD so my wiring method may not be useful to you, but I used the cigarette lighter wires for acc power, illumination, and ground. I derived constant power from an open relay port in the fusebox under the dash. By the way I love my Perrin gauges!
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Old 04-20-17, 03:07 PM   #4
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Default Re: Power/ground/etc for aftermarket gauges

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Originally Posted by SubySal View Post
I have a GD so my wiring method may not be useful to you, but I used the cigarette lighter wires for acc power, illumination, and ground. I derived constant power from an open relay port in the fusebox under the dash. By the way I love my Perrin gauges!
Your post about the Perrin gauges is what made me pull the trigger. I like their functionality a lot!

And that's my issue with a lot of the existing information on this site about installing gauges is there are a TON of walkthroughs on how to install a boost gauge on a GD chassis, but now the new chassis have all this touchscreen crap with extra screens that complicates the wiring.
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Old 04-20-17, 03:10 PM   #5
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Default Re: Power/ground/etc for aftermarket gauges

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Originally Posted by d0zxmustang View Post
add-a-fuse is what I used for power. Piggy-backed off one of the switched accessories (cant remember exactly which one, I think it was rear defrost maybe). As far as the dimming, I spliced into the dimming wire on the radio harness.
Thanks for the info. The good thing is these Perrin gauges only draw 0.3w each according to the docs. Is the dimming wire bundled into the radio harness directly? Do you happen to remember which wire specifically?
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Old 04-20-17, 03:31 PM   #6
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Default Re: Power/ground/etc for aftermarket gauges

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Originally Posted by raisingAnarchy View Post
Thanks for the info. The good thing is these Perrin gauges only draw 0.3w each according to the docs. Is the dimming wire bundled into the radio harness directly? Do you happen to remember which wire specifically?
Yes, its in the radio wiring bundle. The illumination wire should be the "violet" wire, and should be pin 1 (may be a different pin if you have navigation).
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Old 04-20-17, 07:36 PM   #7
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Default Re: Power/ground/etc for aftermarket gauges

Do the opening ceremonies of multiple Perrin gauges operate in sync?
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Old 04-20-17, 08:24 PM   #8
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Default Re: Power/ground/etc for aftermarket gauges

Quote:
Originally Posted by raisingAnarchy View Post
Your post about the Perrin gauges is what made me pull the trigger. I like their functionality a lot!
Cool! I really like the simplicity in their functionality as well. I can recall peaks very quickly after a run. Before I had to hold down buttons and such.

Quote:
And that's my issue with a lot of the existing information on this site about installing gauges is there are a TON of walkthroughs on how to install a boost gauge on a GD chassis, but now the new chassis have all this touchscreen crap with extra screens that complicates the wiring.
OK yea. I didn't think about that. I imagine the wiring on the new cars is way more complex. Still though the cigarette lighter/ 12v power port should be the same right? Mine had four wires. A power and ground for the little night illumination bulb and another power and ground for the socket itself. The constant hot I found by poking the open terminals in the fusebox with a meter while the car was off. I then cycled the ignition switch to make sure the power stayed on no matter what position that switch was in.

Quote:
Originally Posted by mheyman View Post
Do the opening ceremonies of multiple Perrin gauges operate in sync?
Yes. Mine do. They daisy chain together so I couldn't see them not syncing up. Both opening and closing ceremonies seem to sync up exactly.
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