I bought a 06 g35 coupe about 2 years ago without an engine and the car was sitting since then. After buying an engine and a harness from a different car took it to a shop- now after installing engine there are 2 plugs lose in the front and two plugs lose in the back which seems not to be able to plug into anywhere.Car is kicking but not turning over. Any advice? Do i have to get a complete different harness? See attach pic