One theory would be that you have a hot wire shorting to ground, close enough to the radio ground that it disrupts the radio, until the fuse blows and the radio starts working again. The turn signal fuse also feeds the backup lamps. The two hot wires from the fuse are 18YL/BK, one goes to the back up lamp switch, another goes to the flasher on the fuse panel (do flashers short?), then 18GY to the steering column connector, then 18VT up to the turn signal switch.
That should get you started, but it will be hard to trouble shoot without schematics. The factory service manual has the best, but Chilton's Wrangler/YJ manual has some and it's cheaper, I just don't know how good they are..
jerry
87 Cherokee 4.0, 90 Wrangler 4.2, 95 Wrangler 2.5
That should get you started, but it will be hard to trouble shoot without schematics. The factory service manual has the best, but Chilton's Wrangler/YJ manual has some and it's cheaper, I just don't know how good they are..
jerry
87 Cherokee 4.0, 90 Wrangler 4.2, 95 Wrangler 2.5
