I wish I knew. With mine, back in 1997, I had to fight just to get one late in the model year with the correct gearing and options. When it arrived, it was perfect... . except for the lights... . it had none. It did, though, have the overhead compass and thermometer, so maybe it did have the harness. I was stuck and had already paid for the truck, but managed to act upset to the dealer about the lights. He had them done before I was able to pick up the truck and it cost like eighty or a hundred bucks. He said it was a really easy job. The harness that runs up the A-pillar looks factory, so your guess is as good as mine. All trucks with the Diesel engine should come with the lights anyway.