Stock '00 Wiring connectors are at the left in the photos, modified to connect to the stock '95 engine compartment and interior harnesses.

The '95 A/C line ends were grafted on to the end of the '00 Lines

When doing an LS1 swap into a '98 or earlier F-body, a '98 LS1 should be used while the '99-'02 F-body needs an '99-'02 LS1. This is due to the fact that the '99-'02 ECM uses a single data line to run all the engine guages.