Inoperable Radio & Mystery Box - Euro Import 90
I recently imported an '84 90 with a 300tdi. When I first got it, the radio worked properly. After a few days it would no longer turn on. A few days after that, without doing anything, it again worked properly. Only a day later would not work and hasn't worked since (a few weeks now). I took the radio out and fwiw, it is a Volvo radio and had a look at the wiring. Admittedly, I don't know much in this regard. One red wire, one yellow wire & one green wire were not connected to anything and there appeared to be nothing to attach them to. The red and yellow came from a smaller plug in the back of the radio. The green wire came from a seperate larger plug from the back of the radio. Maybe a loose ground, but where to check?
Additionally, I found this "mystery" box in the dash. I have no idea what it is for. It has a dual wire going to it and a very small toggle swith at one end. I looked inside and it has a AA battery, but the battery housing is broken so I guess would not have any power.
Can anyone provide any helpful information?