I have a 89 4runner sr5 with the 22r engine. I had to junk it*tear*. However I bought a 94 pick before I did and started to swap the interiors. What I noticed was the 94 has no tach. Can I put the 89 cluster in and have it actually work or will I have to modify the cluster. Also when I removed it from the car I noticed a wire going to the cluster on the tach side.

Tl;dr have a 89 4runner tach and want to put it in a 94 pickup. Same engine and tranny

 

u will have to more then likely move wires in the 94 harness to make it work. also in 94 didnt they have a electric speedo. and the 89 is mechanical. it does sounds like someone might of added a cluster for the tach in the 89 or like me had a grounding issue and the lights didnt work and that was the fix.

 

So how would I go about switching it over?

 

well judging by the cluster the Speedo is mechanical

 

Also should note its in kms

 

89 and 94 clusters are not interchangeable without MAJOR wiring modifications, as well as adding a speedo cable.

I wouldn't bother, its not worth the hassle

 

ya, just go to a boneyard and grab one. The swap from a 93-95 isa pretty simple job... plenty of threads here covering that swap...

 

Would a 94 base 2x4 have a tach built into the ecu?

 

You might be in over your head on this one.

 

Let me clarify is the tach reading off the coil or ecu?