[LoSt180]

Originally Posted by inopsey

do you have a link to the wiring changes needed?

Here you go:

Z33 coils are wired the same as S15 coils. If using S13/S14 subharness, you just have to flip 12V and Ground, pretty simple with a small flathead to move the pins around.

If looking at the end of the connector (terminal side) it goes:
S15/Z33 - [12V]-[GND]-[SIG]
S13/S14 - [GND]-[12V]-[SIG]

If you have a wiring specialties coil harness, the colors are: Ground - Purple/black stripe, 12V - Green, Signal for cylinder #1 is black, 2,3,4 are pink wires. Not sure why #1 is black, probably for backward compatibility with the S13 check circuit, but I bet people confuse it for ground all the time.

from this thread: https://zilvia.net/f/showpost.php?p=...7&postcount=22