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Finally got around to wiring up my 1uz from a 91 ls400 into my 87 pickup truck. I've got the truck running but I watched a YouTube video where the guy from New Zealand said it’s not wired up properly if you don’t have power at your +b wire in the diagnostic port for three seconds after the motor shuts off. I thought I had all of the b wires wired up correctly but obviously I don’t because my light shuts off as soon as I turn the key off unless there’s something else I’m missing. Any help or thoughts would be appreciated.