I would just go to a FLAPS and buy a generic starter button.

wildlyguessing ...
it's a 10 amp cirucit at the most.  I don't believe the trigger signal
to the solenoid is fusedin a vanagon.
pretty sure it's not ...straight from the ign sw, non-fused.

I sometimes put a starter button on a vanagon. ( in that nice flat spot
right above the light switch )
I like to do them with pretty generous wires 'hot' from the battery.
Of course that means it'll work any time..
but it's sure to deliver a good jolt to the starter solenoid that way.

scott
On 11/28/2012 11:32 PM, HotelWestfalia wrote:
> I would like to install a push button switch on the firewall to start the engine.  My question is; how many Amps it should be?  As I was looking at the wiring, I see 16A and 8A but maybe it can be less.
> Anyone?
> Thanks for any help.
> Zoltan
>