alternator, split charge etc.

Dec 25, 2004 5 Replies
M

I've fitted a new alternator (was almost a year ago now) It has the usual terminals on the back and one for a rev counter.



I'm thinking of using a relay to split-charge to a second battery (for lighting and other gubbins).



Question is, is there a connection I can use that is only live when the engine is running? so I can use this to trigger the charge relay.



I don't mean an ignition live as this is live before the engine is started.



Second question, Most relays I see around are 30 or 40amp. will this be suitable for a split charge relay with a 65amp alternator? Logic tells me to use a 65amp or more relay.


Regards. Mark.(AKA, Mr.Nice.)


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P

Check out

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for a split charge relay, they trigger on rising voltage and put a charge to a stand by battery when the system volts rise above 13, ie when the main battery is charging. ( SMARTCOM RELAY £10.95

  • P & P)

Peter.

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M

Thanks, I'll 'ave one of them....

Regards. Mark.(AKA, Mr.Nice.)

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M

Thanks for the diagram. I'm going to try one of those smartcom devices another poster suggested, I'll keep a coply of your diagram incase I need it.

Regards. Mark.(AKA, Mr.Nice.)

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J

I have a system installed which uses a small relay to operate a high amp relay called a "Coil Hersey" relay which is very reliable. the coil is made in USA.

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J

see this wiring system that I have and works fine.

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