norba_racer
Well-known member
This was easier than I thought it would be. I took my time, but could be done again in an hour or so. Make sure your donor has square vents if your putting it in a EFI Sammy.
First remove the two star bolts that hold up the steering column and drop the steering down so the instrument custer will clear the hazard button.
Next remove the two screws on top of the dash and the two under the dash that hold the cluster in place. Pull the cluster out and unplug the wiring harness. Once you have the thing out compare the two. The 88.5 is on top in the pics. Notice the wires coming out of the 88.5 cluster. They are attached to the speedo and are for the check engine reset switch under the dash. I didn't connect these to anything in my sammy.
Next you will need to remove both speedos and swap the vehicle speed sensor from your efi speedo to the donor carb speedo. If you take them both apart and lay them side by side you will see the difference. It is a small circuit board with a long shiny resistor tucked up next to the speedo wheel and some metal pieces. The brass on the 88.5 will need to be removed to accommidate the VSS bracket. (see pics)
The first picture shows the difference between them and what needs to be swapped. The second picture shows the VSS removed. Easy to do.
Now put everything back together and install your new tach cluster. Oh yeah now is your chance to remove the buzzer. It is the black box on the back of the cluster and it is even labeled "buzzer". I swapped mine and hooked it back up. I sometimes for get to turn stuff off or to grab my keys.
Here is the finished product and I hope someone can get some good from this how to.
First remove the two star bolts that hold up the steering column and drop the steering down so the instrument custer will clear the hazard button.
Next remove the two screws on top of the dash and the two under the dash that hold the cluster in place. Pull the cluster out and unplug the wiring harness. Once you have the thing out compare the two. The 88.5 is on top in the pics. Notice the wires coming out of the 88.5 cluster. They are attached to the speedo and are for the check engine reset switch under the dash. I didn't connect these to anything in my sammy.
Next you will need to remove both speedos and swap the vehicle speed sensor from your efi speedo to the donor carb speedo. If you take them both apart and lay them side by side you will see the difference. It is a small circuit board with a long shiny resistor tucked up next to the speedo wheel and some metal pieces. The brass on the 88.5 will need to be removed to accommidate the VSS bracket. (see pics)
The first picture shows the difference between them and what needs to be swapped. The second picture shows the VSS removed. Easy to do.
Now put everything back together and install your new tach cluster. Oh yeah now is your chance to remove the buzzer. It is the black box on the back of the cluster and it is even labeled "buzzer". I swapped mine and hooked it back up. I sometimes for get to turn stuff off or to grab my keys.
Here is the finished product and I hope someone can get some good from this how to.