Not sure where to post for help on this Wonder Bar Radio that will eventually be reinstalled in my 1969 Olds 442. I was told by the previous owner that it worked when removed before he replaced it with retro sound stereo. I'm wanting to put the original back in. Please let me know where this should be posted or an Admin can please move it.
I'd like some help on powering it up. A wiring schematic would be very helpful if you have any leads. Thank you

 

I have a '72 but install/wiring should be the same basic effort - there should be an orange switched wire in your dash harness into which the radio plugs. I believe the radio grounds via its chassis bracket mount (you need that for mounting the radio securely into the dash).

Then you just need to install the antenna plug lead into the radio's connector lead

as for speaker(s), there should be wiring leads coming off the radio to which your speaker(s) would directly connect (this assumes in a perfect world that you were still using the factory dash and/or rear speaker(s) - I recall however that aftermarket speaker ohm ratings are not 'technically' compatible with the oem radios so use caution in that regard if really electing to put the OEM radio back in its original form without the right speaker ohm ratings (as opposed to sending it out for a rebuild with modern stereo internals that would be compatible with modern speakers (and other accessory items).

at worst, you could also opt to get one of these:

https://www.vintagecarradio.com/vint...h-bluetooth-1/