I just bought a tachomter for my 2003 F-150 because it didn't come standard with it. Me and my buddies looked all over the motor and can not find the tach terminal. It is a 4.2L V6 5-speed. If anyone has any info on this, it would be really helpful.

 

If I am not mistaken, you will have to connect to the TACH wire on the computer.

I put a tach on my 98 4.2 and that is how I did it...

 

could u be a little more specific of what u had to do?

 

how exactly did u manage to wire it through the computer?

 

You wiring up by putting it in the empty #48 pin on the wiring harness, that's how i did mine and it works fine.

 

bosscityboy86,

What year is your truck?

JMC