tach help

[timh1972]

hello i have a s14 95 240sx rb20det i also have a autometer tach i was wanting to install,due to the fact the factory one isn't working. ok so i have read alot and was told to splice into the 7 pin yellow/red wire at the ecu with the green wire from the tach...well i did and got nothing,the tach resets to zero which is normal,but other than that nothing.so does anyone know of a different spot to tie the tach in or a different tach? i don't want my wife to over do it,lol also i need help wiring in the temp gauge i have the electronic one with i think 4 wires on the back of it. thanks Tim

[RB240Coupe]

the oem i30 and j30 tach will swap into your existing s13 cluster or fit a r32 cluster into the s13

[timh1972]

it's an s14 does that make a difference,i was told the wires are somewhat different maybe only in color what about connection order or pin count?

[91ka24]

U can run the green wire from your auto meter tach to the ground wire on the #1 coil. If its not working with u splicing directly into the tach wire off of the harness, then most likely u have a bad tach drive In the ecu.

[Yellow4g63]

Is your S14 tach dead? or it just doesn't read right? If it's not reading right you can adjust it on the back but you have to rig up a temp harness. You have to take the tach out give it power and adjust the potentiometer till it matches. If you have a AFC you can use that to check.

[RB240Coupe]

it's an s14 does that make a difference,i was told the wires are somewhat different maybe only in color what about connection order or pin count?

My bad, I missed the s14 part. I can't say for sure that the i30 or j30 would swap in the s14 cluster. I was using a cheap tach for a little while because my s13 had nothing for monitoring the RB. I was able to get signal from the Cam angle sensor by splicing the Green wire into it. I cant say how accurate it was didn't have a way to check it but it worked.