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Old 10-03-2007, 08:59 PM   #1
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Default Gauge pillar - where to route wires?

Installing a full replacement pillar gauge pod. Running an autometer boost gauge and AEM Eugo wideband. What's the best (RE EASIEST - Cleanest) routing for the misc. wires, boost signal tube, power, etc? Both under/ around/ through the dash and also through the firewall. Where to take power off from?

I don't mind mechanical stuff but I hate wiring.
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Old 10-03-2007, 09:08 PM   #2
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under dash, near your gas pedal, there is a hole going through firewall. i used that.
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Old 10-03-2007, 09:20 PM   #3
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or where you speedo cable goes through, you can make it look nice coming out of the firewall in the engine bay...its up to you, just get in there and play around...
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Old 10-03-2007, 09:21 PM   #4
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There are a couple of places where there are holes in the firewall leading into the engine bay near the pedal set. Just look for the rubber boots and existing wiring from the engine side, and see where they enter the cabin.

I snagged power from an accessory ignition harness wire. Don't remember the color now though, but IIRC it was black with a white stripe (I have a 1995, they may have changed it on other years.) Only reason I did that is so that there is power when the key is in the Accessory or On position, and no power if the car is off.
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Old 10-03-2007, 10:17 PM   #5
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I'll have to start digging. Getting my fat old butt under the dash will be fun! God I hate wiring.
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Old 10-03-2007, 11:25 PM   #6
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i've always run stuff off of the cig. lighter
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Old 10-03-2007, 11:28 PM   #7
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Is the lighter shut down when the car's off? Never used mine before. Guess I'll have to check it out.
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Old 10-03-2007, 11:34 PM   #8
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on the '90s the lighter is only one when the ignition/car is on, i've used it for both boost and O2 sensors in the past
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Old 10-04-2007, 12:13 AM   #9
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That's fine too. However, I've seen issues where people have overloaded that small wire with too many things. The ign. wire is larger and just a little more dedicated in my mind, and it was how I was trained when I got my MECP ratings. To each his own though, it should work just fine.
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Old 10-04-2007, 12:40 AM   #10
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Get an "Add-A-Circuit" from advanced or wherever. It's a fuse holder that goes into the fuse slot, then you instal the fuse in the back of it and connect your accessories to the wire coming out of the blank fuse. It's really clean compared to vampire clip taps and crap like that and you don't have to worry about overloading any small circuits because you can tap into anyone you want.
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Old 10-04-2007, 08:09 AM   #11
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Yup, I tapped my instruments and lc1 from the meter fuse, super clean.
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