lftrpllr

I have an A/T 1990 S13 KA24E chassis (Just missing motor and trans, all wiring intact etc.), which im looking to swap in a 1995 KA24DE from an S14. I have all the S14 harnesses, ECU, and a DOHC cluster.

I know I need to modify the dash plug on the new S14 harness to match up with the chassis, and all I can find is people using the S13 DOHC harness instead. Is it still color to color on the S14 harness or is the colors/pinout different?

Also, is there anything else I should be aware of electrically (modifications etc) before I start tackling the harness? Motor is pretty much ready to drop in, just dreading the electrical stuff?

S14rebuild

Use s13 engine harness and appropriate sensors(i recall on the manifold and distributor setup)

lftrpllr

Will that still work since the S13 harness and ECU is for a SOHC and Im swapping in a s14 DOHC & matching ECU??

Krusty_s13

To fit a s14 dohc ka into a s13 sohc chassis you will need the s13 dohc wiring, ecu, and distributor. You will need to rewire the s13 dohc harness to work with your sohc chassis (there are a ton of write ups for this).

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lftrpllr

So I cant use this S14 harness and ECU at all?? There is NO way to make it work?

Krusty_s13

Sure, as long as you give the ecu the voltage inputs it needs it wont matter what car its in, its just a bit more involved then using s13 stuff. Your cluster will require a s13 coolant sensor, and a s13 speed sensor (VSS). Youll have to see if the tach signal will work, but it should.

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S14rebuild

No u need a s13 dual cam harness sensors/distributor setup