Solved Where is the tachometer hooked up on a 1991 4.0L Aerostar?

[zenish]

what do i hook the signal wire to?i have it mounted in a pillar pod and wired other than the most important wire.

 

[410Fortune]

to the tachometer feed wire tan with yellow stripe in 91
You can find it at the pcm, test port and likely behind the instrument cluster

Ford Ranger Tachometer Install

www.therangerstation.com

 

[BrooklynBay]

Post some photos of your set up when you have time. What kind of tachometer are you using?

 

[zenish]

Post some photos of your set up when you have time. What kind of tachometer are you using?

i had to use a two inch ebay cheepy because thats all that would fit in my two guage pillar pod.

 

[zenish]

to the tachometer feed wire tan with yellow stripe in 91
You can find it at the pcm, test port and likely behind the instrument cluster

Ford Ranger Tachometer Install

www.therangerstation.com

where do i find the test port?

 

[BrooklynBay]

The EEC-IV test port is under the hood between the master cylinder, and the blower housing.

 

[zenish]

The EEC-IV test port is under the hood between the master cylinder, and the blower housing.

i looked there.none of those wires are the right color.the module on the opposite fender has the wire but it will be hard to tap there.the wiring diagram shows a tachometer test port or something similar with the right color wire but i can't find it.

 

[BrooklynBay]

On the 3.0L engine, the tachometer signal should be one of the wires on the ignition coil. The later models have an ignition module mounted onto an aluminum heat sink on the passenger's side fender wall. The older models have the ignition module on the distributor. If you decide to get an MSD ignition system, they have a dedicated tachometer connection. The 4.0L has coil packs plugged directly into the ignition module so there's a connection for the tachometer on one of those wires. A schematic should identify which wire it is.

 

[Josh P]

Zenish, I'll check my van to see if I can locate the wire