Thank you so much for your advise, Cobalt.
Wow! Yours look really professional!
- My Front is on 964 C4 Tone Rings/Coupling (964.349.092.01), as the previous owner convert to a C2, but kept the 964 C4 ABS Brain Control Unit (terrible mess of mix/match).
- The Rear is always on a full 993 undercarriage and drive shaft to the 993 G50 6-Speed.
Question #1: Pertaining the next step, I will follow your route. To swap out the front, into the 993 RS Tone Rings, to pair with the Rears & also to pair with the 993 RS ABS Wheel Speed Sensors “as a set” (for the ABS Brain Control Unit to read).
(1) Regarding Connectors & Harness: Can I learn from you, which 911 Model that you purchase them from (964 C2, 964 C4, 993 C2, 993 C4S, or aftermarket)?
(2) Regarding conversion from your ‘90 C4: Can you advise if you converted to 964 C2 or 964 RS (as I believe both systems are slightly different).
- C2 (964 & 993): I believe are 3-Channels, on Vacuum setup.
- RS, TT, C4S (993): I believe are 4-Channels, on Electro-Hydraulic setup.
(3) Regarding spare 993 C2/RS “used set”: Would you happen to have a spare set, to let go (Tone Ring, etc)?
Question #2: Pertaining the ABS Harness, in the front Trunk of car, that connects the ABS Brain Control Unit, to the ABS Hydraulic Pump, ABS Brake Booster Pump, etc (your 964 is a ‘90 C4, hence you modified the existing, instead of starting from a C2 Harness).
(1) Regarding Electro-Hydraulic connectors: Is it due to RS & C4 being on Electro-Hydraulic, so you started from C4 Harness as a base (which the C2 Harness doesn’t have)?
(2) Regarding 964/993 Wheel Speed Sensors & Connectors: Is it due to Connectors being unable to fit the Toner/Coupling size (are C2 /C4 / RS, slightly different)?
Apologies on my many questions, as I’ve done much online and PET checks but I could not understand it.
-> Essentially Drawing #1, Harness 1 & 2: Affects all the Harnesses & Sensors, in Drawing #2 & #3.
Issues with the PET Catalogue & Drawings, is my lack of understanding between M339AWD vs M224 for Harness: Hence I could not understand if I should use “993 C2 Harness & Connectors” (Vacuum) or use “993 C4S Harness & Connectors” (Electro-Hydraulic)”.
Since I’m building a 993 RS Clone, the ABS is the Electro-Hydraulic system (similarities in C4S & TT’s 4-Channel setup, apart from the M/C).
But my confusion is that it does not make sense to me to use M339AWD, as a RS is a RWD (conflicts the Connector Types, due to a non Electro-Hydraulic Pump despite
the same ABS Brain Control Unit & same ABS Brake Booster (same PN: 993.618.127.00).
Thank you again Cobalt and best regards.