I have three AM FM radios for 68-72 Malibu. Where can I find the female plugs that plug in the back of the radio? It has 12 contacts set up in three sets of four contacts with +12, Gnd, lamp, Ant, RR+, RR-, LR+, LR- LF+,LF-,RF+, RF-.

The only part number is on plastic plate =
7895307. What is this mystery radio?
Thanks,
Denny

Denny Oestreich