I am by far not a n00b to wiring and have done a few before but I ran across one today that has me stumped.

I cut the orange and black wires because its on a 4cyl application, hooked the positive to the battery, the negative to a good ground, and the tach signal to the blue wire off the distributor ( same setup I have done PLENTY of times before )

Started up the car, its at an idle of about 1500 at the moment, but the 5" is reading close to 6k. Rev it up, still same thing? Think I was sold a bad autometer tach?

 

Anyone? I just want to have an acurate reading at 10k.

 

When I did my shift light I tapped into the gauge cluster, using the blue wire with white dots on it. I would try that.

 

Technically, that isnt the most accurate reading. Autometer themselves told me that I need to go off the distributor as well as many other threads on this board state. I am just wanting to know if I was sold a bad tach because it reads super high.

 

some of the tachs you have to cut one of the small wires.I got a autometer tach off of a crx and tried it on a eg civic and the readings were high or something like that.turns out the eg needed the wires to be reconnected. just go to the tech section of autometer, that's how I found out.

 

I tried connecting one, and then the other, and both... Last night when I was being stumped. Like I said, this is not my first time.

I think the actual tach is fubar.

 

you have to cut the small wires on the back of the tach and mix and match until you get the right RPM

 

Did that last night.

 

i have an apex safc and i used the signal from the ecu for the rpm