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I rebuilt my engine and yesterday I put everything back in the engine bay. Everything went fine except that I had two grounds, which I forgot the correct location for. I checked the forum an vaguely found an answer. However, when trying to connect the battery, it sparked and smoked at the terminal.
When disconnecting those grounds, it worked fine and I could put the car in accessory mode. I did not try to start it yet, I need to readjust the TPS first.
Now I have two issues.
1) Where should I put those grounds?
2) My pfc commander does not turn on, could this have fried the ecu? Ground on the little fuse box Ground in the front harness
