The one I have in my car (Lear Jet) works perfectly. In fact, I bought it at a small car show where an older man had a small table set up. I walked up saw the 8-track, saw the identical burl wood design to the 68 Bird and I asked how much. He went on to tell me this long story about Lear Jet etc., he had the wiring harness, the original manual etc. Now I am thinking $100 bucks at this point. Finally he says how about $15.
My wife had just given me a $50 just a few minutes earlier to go get us some lunch. I gave the old man the $50 and I told him I was sure he could get more for it on Ebay and he said "what's Ebay". Mind you this was only a few years ago so I said don't worry about and take the $50.
The old man couldn't beleive I was giving him more than his asking price. I walked over to the car, wired the thing up right there at the car show and bang, the thing worked perfectly. In fact I had to walk around and keep asking people if they had an 8-track I could borrow to try it.
I am now getting ready to spring for the new am/fm unit that a few people on here have been talking about. They are the only ones on the market that look 100% correct for our cars, yet have newer guts and supposedly sound great. Can't wait...