[L78toLT1]

I installed my AEM wideband gauge yesterday. Installation was a snap with one major exception: despite searching for over an hour, I was unable to locate a switched 12v power source inside the car. All 12v wires I checked were not switched. The voltage on all of the switched wires that I could find had been stepped down to 5 - 6 volts. I connected to a 12v unswitched wire and temporarily installed a jury rigged switch under the dash so I could kill power to the gauge. Can anyone help me to locate a switched 12v wire?

[SlydrSS305]

You BCM, under the steering wheel, the black connector there's a small green and violet wire, there are 2 bigger same color wires but you can't use those. Use the smallest one.

[L78toLT1]

Thanks! I'll give that a try. I checked a ton of those smaller wires and they all measured 6 volts. I'll check the green and violet one and report back.

[L78toLT1]

Originally Posted by Lt1z350

trying to find same thing for my zl1 I even tried to pull up the wiring on gm global connect but no schematics showing for 2017 some reason on anything electrical only mechanical will come up so no help there. Be careful just pricking wires I did that on an s-10 in the late 90s and blew up both airbags when I hit a bcm wire with the test light.. Ears ringing for days so always been hesitant to just test for power on weird wires. lol

Damn! I never considered the air bags. Strictly for better access, I disconnected the plugs before checking voltages, I may have inadvertently saved myself from a similar fate. Still have not tried the green/violet wire SlydrSS305 recommended, but I'm sure it will work as his car is pretty much identical to mine

[L78toLT1]

Hey Lt1z350, check out a thread in the audio section entitled hardwiring a radar detector for more switched power options.

[TJay74]

Originally Posted by Lt1z350

Got an answer on zl1 side just now. 12v Source in the console wires are under console easy to tap in to I was just told and will be on a higher amp fuse this way. Probably can run my radar there too as both only have 3-5 amp pull.

What wire is it and where in the center console?

[Dustya]

The whole console comes out pretty easy there is a ground bolt under there too you can use I just tapped in under the consoles and ran my own wires out for later use.