Installing Gauges- Where's the best place to get power?

[Cgeigert]

Almost done installing the gauges. Where's the best place to get constant and switched + power under the dash in the driverside? I assume the draw should be low enough I shouldn't need inline fuses or a relay right? Just running boost, EGT and oil pressure.

[krash]

You could use the ignition harness. Coming straight out of the ignition the White wire is a +12v constant, and the Blue wire is the accessory wire.

That harness goes from the ignition to a pigtail under the steering wheel (above the pedals), where it changes colors and goes to different places in the car. So if you're going to cut in from after the pigtail, make sure you pay attention to the colors.

[Cgeigert]

That should work, thanks.

[Gabes13]

Im using the cluster harness, since it has all power, ground and light sources there. It powers the cluster, why not my gauges?

[OM3GA]

I typically use Tap-a-circuits and put them on a 12v Acc.



Or an inline fuse from a stereo acc wire since i don't run stereos in racing devices.

[Cgeigert]

Got plenty of inline fuses and relays in the scrap pile. You wouldn't believe how much wiring I pulled out of my coupe. Aftermarket power windows and locks, multiple wires run to the engine bay. Lost like 10 pounds of weight. Putting these gauges in is the last of the cleanup. I'll try to post pics of product if it turns out well.

[Cgeigert]

You could use the ignition harness. Coming straight out of the ignition the White wire is a +12v constant, and the Blue wire is the accessory wire.

That harness goes from the ignition to a pigtail under the steering wheel (above the pedals), where it changes colors and goes to different places in the car. So if you're going to cut in from after the pigtail, make sure you pay attention to the colors.

Are u sure about those colors? Hooked it up and gauges don't light. I'm using greddy so simple 4 wire. Blacks all ground. Reds I connected to white wire, and the white and oranges I connected to blue. Boost gauge is on all the time even when car is off and it is only connected to blue. So blue wire is acting like constant.

[Cgeigert]

Never mind I figured it out. First off, two of the gauges have dead bulbs so I have to replace those. Second I realized I needed a seperate lights on source. So the constant + goes to white, the switched + for gauge function goes to blue, and the light up function I put to the green wire from the turn/lights stalk. So then as soon as I figured all that out the light bulb in the boost gauge blew. So now I have to yank it all out and replace the bulbs before I can get em to light up.