I gave up on finding a 85D150 harness and went with a complete harness from an 86W150

FYI..86 was a change in plug styles so you need 82-85 I found this after I removed my 85 harness and installed the underhood/dash harness from the 86...85 chassis/tail light harness would not plug up to 86 harness.

took a while to locate a 86 chassis harness out of Alabama JY. and the correct plug-in front turn sig pig tails for 86 out of Kansas JY.

I suggest repair to what you have depending on condition.