Hey guys I am working behind my radio and I found a connector that isn't plugged in to anything. All systems work fine, but I probed it and one wire was hot with key on. I may use this as a power source for my Wideband, but I'd to know what it is first. Any ideas? It's a Manual trans car, maybe a connection for an auto that I just don't need?

 

Looks like you have a 5-spd car... that would go to an auto shifter.

Neutral safety sw (yellow & purple), backup lights (blue & green), a copy of the dash lights(org & blk).

 

Perfect, thank you. So, it looks like the blue wire for the backup lights is always hot with key on. Any idea if one of the other terminals could be used for ground? Otherwise I'll just ground it to the chassis.

 

Depends on what "it" is that you're wanting to ground... for a VERY low-current, low-power application that isn't critical, and that can tolerate lots of noise and uncertainty, like a backlight bulb, you could use the black one. Anything more elaborate than that, I'd go to the chassis. Definitely wouldn't use that for a WB. Probably best to ground that to the block or similar. (casting)

 

Ha ha just made this thread. I was thinking about using blue for a wide band as well but I ended up tapping into the fuse box and running it over with an inline fuse per AEMs instructions. I also used a chassis ground.

 

Thanks for the replies. This will be for wiring an Innovate LC-1 Wideband. So, I'd probably be best pulling a new/clean power/ground line. Maybe a relay that uses the blue to switch it on and a separate power line back to the fuse box.