I bought a new OEM engine wiring harness and front light wiring harness a while back, and just got around to putting them on the car - '69 RS/Z. I haven't gotten the motor back in to test them out, but I must say, they fit perfectly. All the little mounting tabs were dead-on, and all the connections fit like a glove. It's a relief to have a repo part fit that well right out of the box!