1966 Coupe Radio Wiring

ReturnToHanger

New Member
Feb 13, 2020
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Alabama
I have a USA-740 modern radio that I’m wanting to install. The power cords for the radio are:

-A red one that needs power only when the vehicle is running
-A yellow that needs a slow trickle of power constantly even when the car is not running
-And a ground

I found a black cable with a yellow connector directly beside the ignition switch. It also appears to be beside a blue/yellow 3 prone connector. Can someone clarify? Thank you.
 
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