J.I.L Model Number 615CB

Hi folks,
I'm new to this thread and I am on the hunt. Not long ago a came across an old JIL Cb radio. I have the antenna, an adapter box(I don't know the lingo) for the coax cable, and all the other accessories. The problem I've come across is connecting this to the cables on my car. I've included some pictures if that might help.

Thanks
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