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 GaryFranks
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| posted on April 26th, 2010 at 12:04 PM |
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Alternator conversion wiring confirmation
Hi Folks, I'm installing an alternator into my 1971 beetle and just want to confirm the wiring before I connect the battery.
The car originally had a generator, and some wag had moved the regulator into the engine bay. I'm intending to move the regulator back under the seat
where it belongs.
I have attached a diagram of how I think the wiring should look.
- Will the old regulator be OK with the alternator?
- Do I need to run a new red wire from D+ on the regulator to d+ on the alternator?
- Does the B+ red/white wire go straight to the battery, or should it also connect to the B+ on the regulator?
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ian.mezz
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| posted on April 26th, 2010 at 12:26 PM |
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a lot of alternators have built in regulators
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Uber Kafer
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| posted on April 26th, 2010 at 06:54 PM |
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I have one of those alternators, its Bosch and rated at 50 amps if I can read the nameplate details correctly. The regulator was mounted under the
seat but it is a different style, and possibly unique to that alternator. the bosch model number is 0 109 600 015. and vw number is 043 903 803A. It
only has 3 wires to it:
Brown D-
Red D+
Green Df
The large red/white wire didnt connect to the reg as it was was jumpered through to the battery and fuse box via a large spade multi-connector at the
location of the Regulator.
The Samba website has a bunch of wiring diagrams for beetles listed by model and year, you may get more info there.
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Joel
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| posted on April 26th, 2010 at 07:05 PM |
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alternators use a totally different regulator to a generator so you will have to swap it
have you got a 3 terminal alt like in the diagram?
with those ones you can just get a 2 terminal regulator out of any 70s holden that will do the job if a vw one cant be found
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GaryFranks
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| posted on April 26th, 2010 at 07:27 PM |
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Thanks guys. It's a 3 terminal alternator, so it looks like I need to find a correct regulator.
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ian.mezz
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| posted on April 26th, 2010 at 08:19 PM |
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68AutoBug
A.k.a.: Lee Noonan
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| posted on April 26th, 2010 at 09:40 PM |
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| Quote: | Originally
posted by GaryFranks
Hi Folks, I'm installing an alternator into my 1971 beetle and just want to confirm the wiring before I connect the battery.
The car originally had a generator, and some wag had moved the regulator into the engine bay. I'm intending to move the regulator back under the seat
where it belongs.
I have attached a diagram of how I think the wiring should look.
- Will the old regulator be OK with the alternator?
- Do I need to run a new red wire from D+ on the regulator to d+ on the alternator?
- Does the B+ red/white wire go straight to the battery, or should it also connect to the B+ on the regulator?
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Nice diagram...
You need an alternator solid state regulator..
the generator regulator won't work with an alternator...
Sorry I don't have any pics...
Mine has an internal Regulator...
LEE
check out:- http://www.vw-resource.com
Rob & Dave's website....
--
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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jjwebb123
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| posted on October 16th, 2010 at 03:01 PM |
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sorry to hijack.
but what about alternators with inbuilt regulator,how do you
by pass the already installed reg?(underseat)
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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1303Steve
A.k.a.: Steve Carter
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| posted on October 16th, 2010 at 05:56 PM |
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| Quote: | Originally
posted by jjwebb123
sorry to hijack.
but what about alternators with inbuilt regulator,how do you
by pass the already installed reg?(underseat)
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Hi
You need to join the 2 thick red wires on the generator regulator, this will join the battery to the alternator + using the thick red wire that bolts
to the post on the alternator.
The small blue wire for the idiot light on the generator regulator need to be connected to the idiot light on the alternator, you can use one of the
left over wires that connected the generator regulator to the generator.
VW did a smart thing with wiring to the generator so that the wires were not mixed up on the terminal on the passengers side of the generator, bolts
on with fully round terminals, the one on the drivers side has a slide in connector.
The fully round connector will be your new + back to the battery, the slip connector can now be your idiot light connection.
Steve
PS Gary, you can get a generic voltage reg to suit your alternator.
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jjwebb123
A.k.a.: Jason
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| posted on October 16th, 2010 at 07:33 PM |
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bit confusing.
there are only three terminals on my alternator.ground, df and d+,and another one.
idiot light on the alternator?
If anyone has had experiences with inbuilt reg alternators please pm me asap.
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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68AutoBug
A.k.a.: Lee Noonan
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| posted on October 16th, 2010 at 10:35 PM |
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| Quote: | Originally
posted by jjwebb123
bit confusing.
there are only three terminals on my alternator.ground, df and d+,and another one.
idiot light on the alternator?
If anyone has had experiences with inbuilt reg alternators please pm me asap.
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Hi Jason,
I've sent You a PM on info on internal regulated alternator....
which only has two terminals...
main B+ to the battery
and the small wire to the alternator charging lamp in the speedo.
this lamp MUST work for the alternator to work.....
cheers
LEE
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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pod
A.k.a.: paul mrvw061
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| posted on October 16th, 2010 at 11:52 PM |
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pod
A.k.a.: paul mrvw061
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| posted on October 16th, 2010 at 11:54 PM |
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jjwebb123
A.k.a.: Jason
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| posted on October 17th, 2010 at 06:43 AM |
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thanks.
lee didnt get any pm from you mate,not sure what is going on there.
thats wicked pod thanks so much.no chance of getting them a tad bigger ay?
~Jas~
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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vlad01
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| posted on October 17th, 2010 at 08:43 AM |
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| Quote: | Originally
posted by Joel
alternators use a totally different regulator to a generator so you will have to swap it
have you got a 3 terminal alt like in the diagram?
with those ones you can just get a 2 terminal regulator out of any 70s holden that will do the job if a vw one cant be found
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Correct, the 2 regulators work on very different parameters and are not interchangeable.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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jjwebb123
A.k.a.: Jason
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| posted on October 17th, 2010 at 10:31 AM |
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do you have to touch the starter at all.
i see some people do.why?
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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krisko
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| posted on February 11th, 2015 at 05:15 PM |
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just found this post while trying to fit a beetle alternator in my kombi
purchased a bosch RE57 three pin solid state regulator and the wiring was very straight forward
-thin red from alternator plug to D+ on reg and piggyback to dash light (blue wire on old reg)
-green from alt plug to DF on reg
Brown from alt plug to D- on reg
B+ large feed from alternator straight to Battery
(rip out old wires from regulator to generator and from old reg to battery  )
the 2 pin solid state reg mentioned in the above posts is the Bosch RE55 - its the same as the 3 pin but doesn't have the earth as i understand
it.
hope this helps somebody along the line somewhere- had me scratching my head for a while
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grumble
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| posted on February 11th, 2015 at 07:36 PM |
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RE57 is the one also used on 2 litre kombi s
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