New member to site but long time reader. I currently own a 1986 Alfa Spider Graduate. I acquired this vehicle after repairing for a customer and storing for 2 years. I did get a good deal on it. The car was missing the radio and I installed an aftermarket radio. I did not reuse the transformer on the red wire (ign. hot) line from the original harness. Now I am getting a short every 10 to 15 minutes in the radio, that is to say the radio will shut off then come back on but after loosing memory and time. Since it is loosing memory and time I assume the constant power line which was yellow coming in to the stereo is the problem. Any ideas where the yellow wire comes from or should I just run a new constant hot to the fuse box?