I'm in the process of cleaning up the CIS engine wiring harness, for a EFI/ITB build. (MS2 with MSD)
What I've done:
1) Removed the old wiring for my external Voltage Regulator (my car has a newer alternator with the internal regulator.
2) Removed the Heater Blower wiring (tied in with the VR wiring ground) as I will be backdating heat.
3) Removed the CIS Cold start valve wiring (2 wires to thermo-switch, 1 wire to starter)
However, I am a little stuck on two remaining circuits, so I could use some help.
A) Circuit 1 in Purple. Red / white travels from pin 10 in 14 pin connector to Warm up Regulator connector. Then it travels from the WUR to the Auxiliary Air Regulator. Then it travels to its final destination, marked 'what is this' in the picture. They all share the same ground, from the alternator, following the same path.
B) Circuit 2 in Green. White 2 pin connector (bottom right in the image) plugs into a receiving connector, by itself, off the harness in the left engine bay. Red wire goes to the 6-pin CDI connector. Other wire, brown/red, travels to the connector what was in the back (left) of the CIS system, marked 'Not Cold Start Valve' in the image. The connector marked 'Not cold start valve' is grounded (by itself) to the alternator.
So, for Circuit A, can I remove this entire circuit? What is the plug for at the end of the run?
For Circuit B, do I retain the white connector, to power the MSD? What about the brown/red to the CIS endpoint, I cannot name?
I think once I get these cleaned up, I should be able to re-wrap the original harness, and move on to wiring up the MS2 and MSD.