89 sohc to 95 dohc swap problem with harness need help.

[s13monkey]

okay i am doing a sohc to dohc swap i have the engine harness schematics but here is the problem i know that there are 4 wires that i have to splice into to the 95 dohc harness make the body harness(under the dash harness) on my 89 s13 to work. i need to know the color codes and what there for so i can finish my swap.

[jafero]

From 240sx.org FAQ.

"Yellow/Red --Tach
Yellow/Green--Speedometor
Orange--Ignition start
Black---Ground
Blue/Black---Water temp sensor

There will be some wires left over. These are for the SOHC's diagnostic plug, and are unnecessary. Please note: Your car will NOT be able to hook up to a CONSULT tool."

From my experience, engine harness had 12 wires and body harness under the dash had 16. But 6 wires on the dash side and 2 wires from engine side did not match any wires on each sides. I left them for now and am searching for their matches.