The auto meter boost gauge instructions say I need switched power that that stays on when the engine is cranked. This ensures the self calibration doesn't reset while cranking and cause inaccurate readings.

Where might I tap in the wiring harness neatly to provide the power?

I've read the install threads at http://www.billswebspace.com/R53GaugeInstallation.htm
but I'm looking for more specifics. The seat heater switch was one recommendation but I'll have to check that one with a VOM.

I just don't want to fry any control modules in the process.
Thanks

 

No detailed descriptions?

 

You can get ignition switched power from the cigarette lighter and illumination from the lighted ring around it. I remember going for a wire in the rpm gauge on the steering for mine, but I don't remember the color.

 

USe the 12 v cig lighter. It's your safest bet IMO. Little bit of work routing the wires, but worth it.

 

I went for the seat heater switch. I found a lot of accessories stay on during cranking. I think that's because they operate at such a low voltage these days. So the gauge calibrates just fine.

Anyway everything works great except the dimmer portion of the lighting. The voltage coming off the dimmer circuit is only 3-4Vdc so the 12V bulb barely lit the gauge. I went to the same 12V wire as the gauge and now it looks pretty much the same as the OEM instruments.