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Old 27 October 2011, 12:30   #1
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Voltage rectifier?

I have a mariner marathon / tohatsu 25hp engine

Would like it to charge a battery so I need to fit a voltage rectifier.

Question is, do I have to buy. Tohatsu one, or can I buy a generic one for say a motorbike off of eBay? Would there be any issues with that? It is just four diodes to turn the ac into dc I think so it shouldn't matter? Wanted to get advice though first!
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Old 27 October 2011, 12:35   #2
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why not buy the proper kit? and make life easier for your self!
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Old 27 October 2011, 12:38   #3
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Because, it seems to be a box with four wires coming out of it.

Tohatsu want $300

eBay from China want 5

For the sake of wiring four wires, I wouldn't mind putting that money to something else.

That said, it seems too easy so I thought I would ask the experts
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Old 27 October 2011, 12:41   #4
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For instance:

New Motorcycle Voltage Regulator rectifier for S125 | eBay

Four wires, Green with the ring on it must be earth, red will be in theory DC +ve. Leaving the two yellows for the yellow and white feed from my coil.

It really seems so simple there must be a catch?????
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Old 27 October 2011, 16:30   #5
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Ebay item has 5 wires in picture. Don't understand extra wire. An electrician with multimetre should be able to work out correct connections. For 5$ i'd buy one and play about but !!!
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Old 27 October 2011, 16:39   #6
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Donald don't wish to patronise but the 5th wire is the earth. I would go for the ebay item every time
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Old 27 October 2011, 17:41   #7
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No offence taken but,
I see 3 yellow, 1 red, 1green.= 5 wires
I expect a rectifier to have 2 wires for AC input, and 1 positive(red), and one negative/earth/chassis (green) for DC output.
Why three yellow wires?
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Old 28 October 2011, 01:26   #8
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Since some vehicles are positive earth I'm assuming that the negative output is not tied to earth. I could be "Wong" though
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Old 28 October 2011, 01:32   #9
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Oh dear, there are 6 wire ones as well...... Look what you started Donald!

5 wire rectifiers

I'm off back to bed now.
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Old 28 October 2011, 01:43   #10
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Quote:
Originally Posted by Courageous View Post
Since some vehicles are positive earth I'm assuming that the negative output is not tied to earth. I could be "Wong" though
This is kind of the conclusion I came too. Will let you know when it arrives from china!
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