Re: Need some ideas on how to hook up an alternato

Posted by RodInNS on December 22, 2005 at 19:13:55 from (142.177.97.224):

In Reply to: Need some ideas on how to hook up an alternator-2 posted by old on December 22, 2005 at 16:58:41:

Old,

If you go to the local parts store, NAPA, or wherever, tell them you want a fuel pump switch. This is a low oil pressure cutoff switch for the fuel pump. The switch itself will be a 3 prong job. One terminal is for the normal oil pressure switch (idiot light circuit), which is normally open under pressure (ground for no oil pressure, light comes on). The other 2 terminals are normally closed under pressure, which can supply power to a fuel pump, or in this case, the alternator. Just run a power wire from a terminal block or power source (alternator BAT terminal), through this pressure switch, and then up to the alternator. I guess it wouldn't hurt to stick an inline fuse in there, but I don't. There's no need for resistors or any of that crap, just a straight power feed to excite the alt.
I can't see any other way to accomplish this *neatly* without installing a switch, unless there is some sort of ignition/instrument switch that can be wired into. The last pressure switch I got for that job cost about 10 bucks at NAPA. HTH.

Rod

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