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[JasonH]

Clutch switch: I don't think they're too fussy. I believe a Vectra one will fit the hole too. The EPC does list two part numbers though, one for the older chassis.

Brake switch: Ultimately the cruise module appears to monitor both pairs of contacts from the brake switch. Mine did need the 4 pin switch but then I had the wiring for a 4 pin switch. I wonder that if you don't have the wiring for a 4 pin switch you don't need one... maybe. Might depend on the programming of the cruise module itself.

I'd certainly wouldn't buy the 4 pin switch until I'd tried without.

[JasonH]

The EPC definitely lists a different clutch switch for before S1221921. The illustration shows old and new as well. Looks jolly similar, probably would fit the same hole.

If you have only 2 wires to the brake switch and (even with clutch switch in place) no cruise, how about this:

Get the 4 pin brake switch and wire the two spare contacts in series with the clutch switch circuit. Either pedal pressed breaks the circuit: cruise drops out. Should be perfectly safe (assuming you wire it up right!).

[spiketheskinnydog]

Good news!
I've just fitted the cruise module and indicator arm, and bridged the clutch switch as a temporary measure, and it works! The cruise activates as it should, and switches off at a press of the brake pedal or at the indicator arm.
Would seem to be the case that if you have 4 wires into the multiplug at the brake switch you need the 4 pin switch for cruise to work, and if you've got 2 wires the standard switch will do.
I can't believe my luck! Usually if I fell into a bucket of tits I'd come out sucking my thumb!

[TheBoy]

OK, has anyone got a manual gearbox and a 4 pin brake switch?

[TheBoy]

OK, has anyone got a manual gearbox and a 4 pin brake switch?

Ignore that, I'll start a poll in general chat...