1966 Barracuda new radio install

[kewen300]

Good afternoon,

I purchased a new redondo radio for my '66. Before I get too indepth in the wiring I am wondering the proper way to hook up this new radio to the old wiring harness. The old radio was an AM only model it "worked" when taken out. Thete are 4 wires total with this: red, orange, green, black. The orange went to the light the red I'm assuming is unit power the green and black I'm assuming go to the speaker.

So now my question is on the new radio harness I have a yellow for constant power, a red for accessory power, black foe ground. I am not using an amp or powering any other speakers at this time. So where do I hook the 12v constant yellow wire, and the red accessory wire? Can I just use the old wiring harness or does the yellow constant 12v have to be spliced into the ignition wiring?

Any help would greatly be appreciated.

Thank you

 

[cudamark]

Hopefully this new radio doesn't draw a lot of power. If so, you may need to run all new wiring for it through the firewall. Otherwise, I would run the constant power wire (for memory?) direct to the fuse panel and attach it to an always hot terminal, such as the door or lighter circuit. Use whatever inline fuse the manufacturer recommends. Main power wire can do the same if you want to be able to use the radio without the ignition being on, or, add it to ignition 1 or ACC depending on your desires. I prefer to do it at the fuse box, but, if it doesn't draw much in the way of amperage, you can use the stock radio pigtail as your switched 12V source. There again, if it draws more juice than stock, I would go to the fuse box and use an inline fuse and not the factory one. Just add to the supply side of the fuse box, not the load side.