How do i wire up my new tach?
#1
How do i wire up my new tach?
Just like the title says, i bought a tach for my truck (finally) and now im not sure where my tach wire is....i read up that it is on my ICM but i cant seem to find it! Any info and details helping me to wire up my tach would be helpuful. Thanks
Ive got a 98' 2.5L if that helps.
Ive got a 98' 2.5L if that helps.
#7
#8
Come on boys. Simmer down now.
Yes....OP should have just got a 98-03 Ranger or Expo SportTrac/Sport cluster that has a tach and swapped it in. No other things needed, just swap in a new cluster, plug it in, and BAM! you've got yourself a tach.
I'm looking in my wiring book right now for your wires to tap into. Gimme some time...
Yes....OP should have just got a 98-03 Ranger or Expo SportTrac/Sport cluster that has a tach and swapped it in. No other things needed, just swap in a new cluster, plug it in, and BAM! you've got yourself a tach.
I'm looking in my wiring book right now for your wires to tap into. Gimme some time...
#10
Just like the title says, i bought a tach for my truck (finally) and now im not sure where my tach wire is....i read up that it is on my ICM but i cant seem to find it! Any info and details helping me to wire up my tach would be helpuful. Thanks
Ive got a 98' 2.5L if that helps.
Ive got a 98' 2.5L if that helps.
What do your tach instructions say your wires go to??
Its either a Black/Yellow(BK/YE) wire or Tan/Yellow(TN/YE) you need to tie into from behind your cluster. Both those wires are in relation to the tach.
If that's the only place to tie power off of for a tach signal, you've gotta remove the cluster anyway, and since you are doing that, you might as well just swap in a tach cluster IMO.
I'm trying to understand the PCM wires and decoding them to see if you can just get a tach signal from there. Stand by.
#11
#14
This might not help but I can tell you this.
I bought a LED/Tach shift light combo for my A-Pillar in my Evo.
I wired it directly to the negative side of a coil and was getting feedback from the ignition causing it to give faulty rpm values at higher engine speeds. I unhooked it from that way and then hardwired it directly into the computer from the main harness and this worked 100X better. If you want to do it that way just find the pinout map for the ECU and jumper into the harness.
I bought a LED/Tach shift light combo for my A-Pillar in my Evo.
I wired it directly to the negative side of a coil and was getting feedback from the ignition causing it to give faulty rpm values at higher engine speeds. I unhooked it from that way and then hardwired it directly into the computer from the main harness and this worked 100X better. If you want to do it that way just find the pinout map for the ECU and jumper into the harness.
#17
Well i dont see any big jumble of wires on my passenger side firewall. I see my brake booster..........and there is a harness right under it that has 4 wires connecting to something right under the brake booster and one of them is yellow/red....but thats the closest i could see to anything you were describing. All the books i have read have said that my PCM is on the passenger side firewall, but all i see is a brake booster and a 4 wire harness.
#18
#21
This might not help but I can tell you this.
I bought a LED/Tach shift light combo for my A-Pillar in my Evo.
I wired it directly to the negative side of a coil and was getting feedback from the ignition causing it to give faulty rpm values at higher engine speeds. I unhooked it from that way and then hardwired it directly into the computer from the main harness and this worked 100X better. If you want to do it that way just find the pinout map for the ECU and jumper into the harness.
I bought a LED/Tach shift light combo for my A-Pillar in my Evo.
I wired it directly to the negative side of a coil and was getting feedback from the ignition causing it to give faulty rpm values at higher engine speeds. I unhooked it from that way and then hardwired it directly into the computer from the main harness and this worked 100X better. If you want to do it that way just find the pinout map for the ECU and jumper into the harness.
#22
There's a tach signal coming out of the PCM....wire Tan/Yellow. There's also a wire on the back of the gauge cluster that's also Tan/Yellow and is also in the diagram with the tach gauge. So....yes....I think he can grab a signal from either the PCM or the gauge cluster. Tieing in to the same wire.
#24
#25