Stereo installed by a crackY

So I know I'm gonna redo the wiring when I swap the dash...
But I got tired of no stereo

I pulled the crusty Bloupunk that looked like it had taken a bath!
When I would hit the turn signal, the stereo would lose power!
And the blinkers stopped working at some point...

Today, I used the voltmeter to check the power of each wire. Good ground - acc power- full time power.
Hit the turn signals to see if there was a short. THEY DIDN'T WORK YESTERDAY. No lose of power on the lines!
Connected the rest of the lines and the stereo works!!!! Yeah

So with the stereo working, I check the turn signal 1 more time
FINGERS CROSSED TO NOT SHORT THE STEREO
And the blinkers work!
Stereo works!

So the stereo wiring is connected to the turn signals somewhere...
When I swap the dash, I hope I find it