If it is the 85, then I have the 87 elsewhere - I thought it was an 87 because of the sensors. Here are the pics of both engine wiring harness sets. I own and 84 so both are a little foreign to me. Before the week is out I will dig out both and look for some identifiers.
I had posted a number of items for sale last winter, from our winter trailer in Florida. There are many items still there. I don't know exactly what is left but I hope to know better when we get down to do repairs on the damages done by Irma. I think the 84-85 harness is still available. The 86-87 harness is definitely sold. My 84 GN needed a full engine rebuild and my water pump pulley has gone missing. Once I get a replacement we will be heading for Florida and I will begin posting more 84-85 and 86-87 stuff for sale
