Join Date: May 2001
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Re: What to do with my Tin Top? 16-Valve EFI???
The wiring harnesses are really not that hard to make. I'v made quite a few of them already (I'm actually finishing two 16v harnesses right now...took a break to check the BBS). Making the harness is not for everyone though. It does take alot of time and effort, especially when making your first one. If you start with a whole harness, you'll find that over 85% of it gets removed. It looks impossible but once you get started, its not that bad.
The best reference is in the "Drivability and Emissions" section of the FSM. Here there are diagrams for the ECM controlled portions of the harness along with other useful info. I get confused with the newer wiring diagrams that are spread over many many pages. I use them only as a reference for particular swaps (ie. OBDII components added to an OBDI harness).
If you make your own, follow the carpenters rule of "measure twice and cut once" or as it applies here,"double check everything before you cut"
And if it means anything, I find the 16v harnesses easier to make than the 8v's.