After reading your post with the after market harness, I may be steering you wrong here. I cut out the wires i needed for my install from the factory plug as I was using the factory amp. No known adaptor for my set up. Although the blue/yellow is your battery. that should feed the yellow wire on...
your blue/ yellow wire from the truck is the battery wire. that goes to your yellow wire on head unit. Bron/ red wire goes to blue wire on head unit and Grey wire goes to red on HU.
Thanks for the response. All back together and running on all cylinders!! Had the belt off last night and believe the cam rolled. Pulled the valve cover and noticed the cams don’t like to rest at the timing mark. They fall left or right very easy.
They are close to 3 years old with 35k miles no cracks. They were on my truck when i bought it but are not rated for a diesel truck so i replaced them. Iwill try to get a picture of them.