When taking out my distributor I lost my mark for the #1 spark plug but i know by memory where it is. However, I had friends over and they were twisting the worm gear at the bottom of the distributor. I was told to find TDC and drop the distributor, it wouldn't really matter if the gear was played with as long as I disconnect an electrical plug that plugs into the ECM. Does anyone know what plug this is?? I know the #1 spark plug wire on the distributor cap is on the top left of the distributor cap when looking towards the front of the truck. Would this work? Would a timing light find the correct gear to drop the distributor in?