![]() For those of you that do not know this already, early 1989 engine harnesses are very similar to pre89 harnesses ours has gray plugs, but they are the same shape and pin configuration as yellow plug harnesses. ![]() We want to swap this engine with harness and ECU into the 1990, and had set out to find what is different between the 2 harnesses primary connectors- M1, B1, B2, B3, B4, C1, and U1 plugs (as referenced by the TEWD)- so that this harness will interface with the rest of the car properly. The harness on the early 1989 engine, however, is in great shape. ![]() The wiring harness off of the blown engine that was in the 1990 Supra has several broken connectors and is in overall poor shape. ![]() My friend and I are in the process of swapping an early 1989 7MGTE into a 1990 Supra. ![]()
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