Fuel pressure gauge

[Peter Jack]

I think you said you were running a magneto. Providing that's the only electrical in the car then just install an external switch to ground the mag.

Pete

[JoeBlystfk]

Perhaps the rule should say that   

[jdincau]

The rule says what it means, you must have a battery cut off switch. No battery, no switch required. As has been discussed at length here before the idea is for the first responders be able to cut all electrical power before they start extraction procedures on the driver.

[Glen]

I think they need a impact switch as well.

[Milwaukee Midget]

I think they need a impact switch as well.

That would be for an electric fuel pump, but Joe mentioned a mechanical pump. 

I agree with Hotrod - if all you're running for electrical is a magneto with a mechanical fuel pump, there is the potential for a situation where you're unable to shut it down.