Mystery wire(s) help

72 dart swinger

Just installed new autometer gauges…

Tore out an aftermarket stereo…

I’m cleaning up after a previous owner….

These wires have me stumped. I have the wire diagrams but can’t find what they are doing. They are behind the stereo. Joined Pink and red come from behind the dash. Different Pink goes passenger side. Useable red joins a resister(?) and goes into a wire group to the driver side.

The pink has a male and female fitting - always hot

I think this should go to the light switch but after my gauge replacements I don’t have a loose wire?


The red is fused 3amp and goes to a small black …. Resister? Never hot

The red and pink to female fitting is hot all the time.


A red wire should be the lighter which would be a full time hot, but the fused red is never hot? And the red and pink don’t show in my schematic? Red and pink to lighter?

I am going to frame these schematics when I’m done. Thanks in advance guys.

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