tach probs

[pan_duh]

ok so ive had mi s13 for a while. and this whole time the tach dont work. the dudes that had it before me went to swap it with a dual cam ka and apparently the harness to the ka24e to pick up the rpms dont match up to the ka24de harness. where is this harness located at. ive looked at all data over and over and ive never located it. could someone direct me in the right direction. plz and thank you.

[sx moneypit]

Check the 240 tech pages.There is a good write up on swapping the KA to KADE engine.It tells you how to take care of the tach .

[cculver88]

I did the ka24e to ka24de swap and my tac didnt work. So what I did is I hardwired my tac and it works PERFECT! Your tac will be more accurate and responsive if you do as I did. First you need to Remove your gauge cluster. On the back of it, behind the tac there will be 3 groups of wires. You want the group all the to the right if you would be facing the cluster as it sits in your car regularly. The wire you are looking for is yellow/red, meaning its a yellow wire is a red stripe on it. CUT THAT WIRE so that you have about 5in of slack coming from the cluster. Then take a piece of wire (I used speaker wire) and splice them together. You will need about 5 feet of wire. Run the wire down below the dash and through the firewall. Now you need to splice the wire coming from the cluster to the coil. It will be the connector that is attached to the MAF wiring. It should be the wire on the left (of the two wires) if you are standing on the driver side fender looking at the motor. That should be all you need to do and your tac should work.

Tools I used are:1 Phillips screwdriver1 wirecutter1 roll of electrical tape

Good luck man, let me know if you need anymore info.