I used a small vacuum switch from Radio Spares connected to the
engine-driven vacuum pump
Graeme Smith
G-CCGW
2008/5/5 Mike Gamble <mp.gamble@tiscali.co.uk>:
> What are chaps using to switch their hobbs timer on with engine start? Is
> there an alternative to the n/o oil pressure switch? - perhaps sensing
> alternator output.
> Thanks
> Mike Gamble
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