[fireslug20]

I have a 98 583 that i put in a hovercraft and am having trouble with the tach. Does anyone know what wires need to run to it. Have two yellow and a black coming out. Getting reading when hooked up to the original harness with the craft but reads way to high. Any help

 

[smallengineguy]

Is it the sled's original tach?

 

[fireslug20]

The tach is from the hovercraft. I think it might be aircraft application.

 

[smallengineguy]

Correct. You need the tach specific to that engine.