I am currently swapping over the cluster from an 91si to my 89dx. The cluster swap was no problem but the dimmer setup is different between the two. I cannot seem to find the wiring diagram for the 91 dimmer with relay. Anyone know how to hook it up so it works and doesnt fry anything?

 

you dont need to change out the dimmer switch...

you simply plug in the cluster as if it were stock

 

It will not work. The switches are different