wiring woes

[Valley]

a few q's.

yeah, noob q but what's this "rsm" in the wiring steps of how to instal rb25?

also, in step 9, it says to connect red #24(ka ecu) with R/W (white plug) but i've only seen 1 red wire ka ecu side (which is used in 4a).... am i blind?

and finally in step 10, which yellow lavender wire is it? the one in the middle or towards the end of the white plug?

[Slo_240sx]

RSM is rev speed meter made by Apex. Aftermarket monitoring unit.

Youre blind.

Lavender on the inside pin #7 Tach signal.

-Alex