@bohbm3 it's a screw in the new adapter piece ,so when you slide the adapter over the window crank you you tighten the screw down the the window crank goes over the adapter and screws into it
I was doing that as a teenager, LONG ago! In HS we'd get a car stereo, build a wooden box to put it in, cut two holes in it, install what we called door speakers and power it with a motorcycle, or two 6v lantern batteries, these were our boom boxes! The Japanese got wind of it and by the late 70's, early 80's, we saw boom boxes with UNBELIEVABLE features! Actually, no disrespect, but you're LATE with this!😂
@juniordelao5533 just take it slow and don't rush it and keep a classic industries catalog handy you can get em from they wet site they have ever part you will need
If you take the impala cluster out you should see your fuel wire connector it like gone to a plastic clip that slide on to those prongs when I'm showing the back of the old cluster and bulb placements