Not to hijack but I'm having the same issue. I have a 99 camy 4cyl and swapped a instrument cluster from a 98 es300. Everything works except for the tach and I bought a dakota digital sgi-100bt. The problem I'm having is the higher the rpms get, the less accurate the tach gets. I took apart the tachs from both the 4cyl and v6 to see if I could try swapping resistors over but I'm having trouble understanding what each resistor does etc. I have close up pictures but I might get 2 unmarred ones from the junkyard to start over. Is this something that someone could possibly help me with? I'd really appreciate it.
Modifying automotive tachometer for fewer cylinders...
in Electronics chit chat
Posted
Not to hijack but I'm having the same issue. I have a 99 camy 4cyl and swapped a instrument cluster from a 98 es300. Everything works except for the tach and I bought a dakota digital sgi-100bt. The problem I'm having is the higher the rpms get, the less accurate the tach gets. I took apart the tachs from both the 4cyl and v6 to see if I could try swapping resistors over but I'm having trouble understanding what each resistor does etc. I have close up pictures but I might get 2 unmarred ones from the junkyard to start over. Is this something that someone could possibly help me with? I'd really appreciate it.