radio installation antenna causes short

.... I got the supply instead of the ground. ... It is fixed now by using correct ground. I hope that is the only error. The wires are the same color, and the 33 year old number tags are falling off. I also have to get into a very awkward position to get under the dash.

I was flying blind too. I got the 82 Mazda Shop manual (all 120 pages!) and NOWHERE is there a wiring diagram...WTH? My ground is now a ground with everything turned on and engine running, even honked the horn.