You will need to get wiring diagrams for both units, and compare them, see if there are any more or less wires in one than the other, and if the same amount.... which there should be, then it would just be a matter of matching up the 97 wires to the 86 wires, and splicing them together. I assume it would work like that, but I havent done the research. I did a similar trick when I added an 86 clock to my 87 MJ, the connectors are different, and the wire colors were different, but it had the same number, and they performed the same job.... so, Good Luck!