The manual(s) that contain the information you need are Sams Photofacts, auto radio series. For the 7TPZ chassis you need Photofact #AR-41. For the 8TPZ chassis you need #AR-48. If you check Ebay you can pick them up there pretty cheap. I don't have either copy you're looking for, but I have collected the various ones for the AM, AM-FM and AM/8 Track radios for 65-66 models. They're a treasure trove of info!