hooking up my stock tachometer help

[fireheadmt]

what color wires from the usdm lower harness hook in to the red top sr20det trans to make the tachometer work. and which hokkup on the trans is it?

my speedo works i already have that one, i just do not have the other two (reverse lights? neutral switch? tach?)

thank you for your help

[ILikeMy240sx]

Your tach signal comes from the main harness not the lower harness. It should be F3 plug in S14 or if you have S13, it's that dash cluster plug.

I don't think you have to do any modifications to the lower harness. I remember for my SR swap, I didnt even touch the lower trans harness.

[9240sx]

If your using a dohc cluster everything sould work.Plug in and play style.

[Blown240sx]

If the motor is a S13 Redtop or blacktop in a S14 you will need to replace the speend sensor from your S14 transmission into the SR transmission. If not the gauge cluster will read x2 the speed your really going.