CA - SR swap Tach

Just put a S13 Blacktop into my 1990 180sx and my tach does not work. I am wondering if i need a '91 cluster, a JDM '91 cluster, or just to rewire my tach. Thought my CA one would work but i guess i was wrong. Any info would be sweet.

you need a DOCH tach.

so 91-93 240sx or JDM SR tach

Thought so, Thanks Rob.

you can use a ca tach, however soemthing needs to be soldered, talk to autodream they can do it for you!

Autodream did my CA tach for me, doesn’t take long at all.

Autodream did my CA tach for me, doesn’t take long at all.[/quote]

Any more info on how to do this, got a cluster today but it doesnt work. I think it might me a CA one because the part # on the tach itself is the same as the one on my origonal one.

I’m not quite sure what they did, I do know it involved doing something to the ECU though. I got them to do it because I didn’t feel comfortable messing around inside the ECU myself :oops:

Take off panels in order to get to cluster. Unscrew tach. Unplug tach. Plug 91+ tach in. Screw everything back together. Pretty straight forward…

LOL thats what i did. Turns out the cluster I picked up was from a CA. Everything is fine now.