I have a 97 with bad speedo. I got another, but it is a 95 with no wts light, just glow plug light. Does the Gp light go out when heat cycle is done? Or do I need to get a obd2 cluster?
I’m might sell that cluster and get obd2 with wts light. I could make this work by seeing if wait to start bulb lights behind black sheet? My speedo doesn’t work and changed sensor on tcase
I dont have the answers if the dash units is compatible.
If the harness system contacts on the back of the dash are the same then the GP lamp should go out when the cycle is complete.
That is controlled by the GP solenoid I do believe.
If your positive that the speedo gauge is at fault, I would go looking for a cluster in the JY of the same year even a gasser and open it up swap out the faulty gauge. I have don't that before on my 95. just swapping out the gauge it's self will allow you to keep your cluster and still show the actual mileage for your rig.