Here's a basic tech question:

Got a 1995 C36 with a few issues and need some guidance from you learned techies.

- CEL on (haven't pulled codes yet but think it might not be useful)
- engine goes into limp mode when asked to perform
- Air conditioning out (A/C shop thinks it's an electrical problem) - all freon was released at some point by the pressure release valve
- Radiator fans flip on immediately upon starting cold engine (huh?)

I recently changed the plugs (Denso Iridiums - inspected plug wires, coil packs and ends - they all looked fine) right before all of this happened and while doing so noticed that the wire leading to the MAF was deteriorating but no other wire in the engine bay appeared to have any similar signs.

Could all of these problems be linked to the notorious bad wiring harness?