Radio wiring, help for the noob please Options

[tod914]

Just replaced an 80's era blaupunkt cassette radio with a 73 motorolla radio. The 80s radio had two hot wires, one from the battery somewhere, and the other wire going into the fuze box, spliced into the ignigition wire. The 73 radio has only one wire for it.
Which wire should I hook it up to for power, and which would likely cause less damage if for what ever reason something shorts.

Thanks

Tod

[Bartlett 914]

Mike may be correct about the antenna but that would be an output connection that goes hot when the radio is turned on. Probably one is to be constant hot to keep the memory programed and for the clock. The other is switched by the ignition. You may short them together. I had done this and the radio was wired unswitched. I had problems with the battery running down. The radio will use some power when off. I think in my case this was too much power drain and in a few days..dead battery. I have a new radio and one wire is switched and the other is not. No more battery problems.