There isnt really much info on it, probably because most people just cut up/repin their existing harnesses. I myself am in the middle of piecing my swap together and I picked up all of the factory harnesses that you theoretically need to make the entire swap plug and play. Minus the transmission tunnel of course. So I have an 2002 is300 and all the wiring I picked up is from an 2002 manual is300 just to be safe. I have the engine bay harness, engine harness, and dash harness. From what i was informed they all have something you need to make the swap work fluidly.question, so the wiring on page 1 is all based on using the auto engine/trans harness correct? what if you're using the manual engine/trans harness? what all needs to be wired for this to work as far as the clutch safety start switch. I searched and didnt see anything, as well as allot of the pics on page 1 dont work anymore. Ive been going over the wire diagram and seeing allot of the manual stuff that runs through plug EA1 (grey at ecu) as would the auto trans stuff for park/neutral switch. what needs to be run or spliced to get the manual engine/trans harness matched to the auto body harness? I'm also using the manual dash harness to help with simplifying this, less cutting of wires. or does anyone have a manual trans, 02-05, subharness -fuse/relay boxes, headlight wiring, etc for sale lol?