Wiring a FIA Cut-Out switch

[tvrolet]

Hi
I'm wiring up a car from scratch and have an FIA-style cut-out switch I want to use, but I've no instructions for it.

Obviously the big terminals cut out the battery, but there are 4 other spade terminals off the back. 2 terminals labelled '1', and 2 labelled '2'. Not tested yet to see if they're double pole or just 2 connections to a single pole though. Now presumably 2 of these are for the low tension side of the coil, but what are the other 2 for?

Also, in searching for a wiring diagram off the 'net, what looks like my switch for sale new comes with the description - Comes with a resistor, which when wired in correctly, prevents damage to your alternator diodes, when the engine is switched off.

So, where does this resistor (that I don't have with the 2nd hand FIA switch) go, and what should it be rated? Except that I already have a ballast resistor (2 actually) on the low tension line to the coil; they came with the [Mallory] coil. Is this what the description of the kill switch is talking about, or other resistors somewhere else on the charging circuit?

And finally...in trawling some other sites for tips to wiring things up I see other mentions of ballast resistors in the circuit. Apart from the ballast resistors I already have at the coil, is there any need for any other resistors in the loom? I've just drawn it up so far with the obvious stuff like fuses, switches and relays...no resistors.

Thanks

WB

[tvrolet]

Ah, many thanks all. It becomes clear now. I hadn't worked out that 2 of the contacts were closed when the switch was off.