mechanic58 Posted September 9, 2022 Report Share Posted September 9, 2022 I need a pinout diagram or a wiring schematic for the C100 connector for my 1993 lumina Z34. I have looked everywhere and I can’t find one. I’m trying to avoid having to purchase a factory service manual to get the information. Any help will be much appreciated. I am referring to the firewall connection on the passenger side under the hood just for clarification. This is where the engine harness interfaces with the dashboard. Quote Link to comment Share on other sites More sharing options...
Schurkey Posted September 10, 2022 Report Share Posted September 10, 2022 7 hours ago, mechanic58 said: I’m trying to avoid having to purchase a factory service manual to get the information. Silly. You'll need a "real" manual for future repairs, too. https://www.ebay.com/itm/133018595088?hash=item1ef886af10:g:54EAAOSwzTRcrfAb&amdata=enc%3AAQAHAAABEATpHjPu10RHrnCty9avUOYOel0fml%2BwoNkV0D%2BPLXFJgUy3Urav5O46OZzhoGVCmMB7%2FJntCGA9QPMsfGxXbL0LQ7YiUCvODy0Wy6ZMpx9JwEnr1B09lrlsJQ2KFrLfEa6oIdRlvQIsqCSJTobuVePrRklJqSqi%2B%2FJ0SGJ5QlpYCpH5zsknBAX51Ur%2FOtKEB3XIiA81%2FN4i0mDuu0uflU27qRaiQQng7k4jG2bHStgHq7Wto8oY%2B99LtEE%2BHWHYrFR9bYzQqTMGgHcy4gOXwVHNwLwci515SmKV4dH%2F1qXLwW%2BrmgrzQT8NEjVsR5AP8eTl7dsL4kuYeC8XPv7PvRtvne%2FAQRWQ%2BWC%2Bd8FpiGgz|tkp%3ABk9SR_jvqdXkYA $32.12, no shipping charge. The disc--CD or DVD--versions are a pain in the ass to scroll through, but nice when using the "search" feature. I prefer paper manuals, given a choice--but I have two service manuals on disc. They work. https://www.ebay.com/itm/141991629754?hash=item210f5c53ba:g:3fQAAOSwubRXNdiP&amdata=enc%3AAQAHAAAA0MsMdcZ9%2BQlSC9VKZ8hQCWADzXxpBfcG1PGgwjEEjk3%2BYvcqqMv2ABHDXs2O3A1wB%2FXunoxYTQDssP2v9HwkfRg%2FNdBO6Xb9PKBycOz8g%2BP4SzBxGgBwy4Yas7VYipXg%2Fykj0kzz4FOurfacc33GSySP1OvQY%2BaP%2Bcxbef1oLkBLmtjrCfHoSRwsrmDwH3aeUCxu9VHz3%2FyyE51HS%2BuNLOd2sBcKFRU2Ia0Y3M5CMBbWfNQ%2F3GqYo0gXFI4nqS%2FkNQqVYiWRE9KxKmZ2dPPf%2FFw%3D|tkp%3ABk9SR_TKvNXkYA $27 "or best offer". No shipping charges. VERY recommended. About what I paid for mine, ten years ago. Clymers, Chiltons, Motors, and Haynes repair manuals make great emergency toilet paper. carkhz316 1 Quote Link to comment Share on other sites More sharing options...
mechanic58 Posted September 10, 2022 Author Report Share Posted September 10, 2022 I ended up purchasing a pair of the factory service manuals earlier this evening for $20 shipped. I won’t have them for a week though, I was hoping to have some of this information for this weekend so I could get some work done. I’m quite sure the only reason I’ll ever have to use these manuals is for these particular wiring diagrams. Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 14, 2022 Report Share Posted September 14, 2022 (edited) These are for a 91, not sure if they will help. Edited September 14, 2022 by pwmin mechanic58 1 Quote Link to comment Share on other sites More sharing options...
mechanic58 Posted September 14, 2022 Author Report Share Posted September 14, 2022 (edited) Thanks, I appreciate it! I’m looking for the bulkhead connector pinout though. These are for the ECM. I’m not using this ECM, thats why I need the C100 pinout. I swapped an L67 into the car. Edited September 14, 2022 by mechanic58 Added info Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 14, 2022 Report Share Posted September 14, 2022 (edited) Yeah, I wish that was in this book. Didn't think it was what you were looking for. I forgot to pull up the All-Data wiring diagram last weekend, which I had planned on doing, but I will set a calendar reminder to do that this weekend when I'm back at my dad's shop Edited September 14, 2022 by pwmin Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 16, 2022 Report Share Posted September 16, 2022 This is for a GP mechanic58 1 Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 16, 2022 Report Share Posted September 16, 2022 Here is what you actually asked for, lol mechanic58 1 Quote Link to comment Share on other sites More sharing options...
mechanic58 Posted September 17, 2022 Author Report Share Posted September 17, 2022 Fantastic! Thanks! Quote Link to comment Share on other sites More sharing options...
pwmin Posted September 17, 2022 Report Share Posted September 17, 2022 You are most welcome. mechanic58 1 Quote Link to comment Share on other sites More sharing options...
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