New Alternator gets hot if I try to connect it

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craigvwbus12
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New Alternator gets hot if I try to connect it

Post by craigvwbus12 » Sat May 26, 2018 10:24 pm

ImageImage

Hiya
I’ve purchased a new alternator that looks like a Dinamo & it has D+ & DF terminals on it, my research says D+ is the starter / battery wire & the DF is the dash light, but if I connect the D+ the alternator gets hot & drains the battery. It’s also got a separate ground wire to it, I’ve tried a second alternator & it dose the same thing so it’s not a faulty unit. ?????


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davidoft
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Re: New Alternator gets hot if I try to connect it

Post by davidoft » Sat May 26, 2018 10:50 pm

Maybe you need to polarise the Dynamo

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Re: New Alternator gets hot if I try to connect it

Post by vwJim » Sun May 27, 2018 6:02 am

That's a dynamo, not an alternator so you're wiring it up wrong
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craigvwbus12
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Re: New Alternator gets hot if I try to connect it

Post by craigvwbus12 » Sun May 27, 2018 8:26 am

vwJim wrote:That's a dynamo, not an alternator so you're wiring it up wrong
It’s an alternator thats made to look like a dynamo


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craigvwbus12
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Re: New Alternator gets hot if I try to connect it

Post by craigvwbus12 » Sun May 27, 2018 8:32 am

davidoft wrote:Maybe you need to polarise the Dynamo
It’s an alternator that’s made to look like a Dynamo, is polarising when you switch terminals over & would you have any idea why it’s getting hot.
I’ve tried wiring straight to battery but it still gets hot


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Re: New Alternator gets hot if I try to connect it

Post by philsparks » Sun May 27, 2018 10:10 am

If it's getting hot it's because it's acting as a load on the battery. Have you connected the ground wire? Also what have you done with the voltage regulator?

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vwJim
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Re: New Alternator gets hot if I try to connect it

Post by vwJim » Sun May 27, 2018 9:39 pm

Do they have an internal regulator? Serviceable parts?

Got any details on them? Curious what the point of them is over a conventional alternator?
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Re: New Alternator gets hot if I try to connect it

Post by davidoft » Tue Jun 05, 2018 5:48 pm

disconnect the fan belt, if you only connect one terminal does it still get hot?

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Re: New Alternator gets hot if I try to connect it

Post by vwJim » Sun Jun 17, 2018 6:47 am

Did you solve this?
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