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?
a lot of alternators have built in regulators
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.
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
Thanks guys. It's a 3 terminal alternator, so it looks like I need to find a correct regulator.
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| 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? |
sorry to hijack.
but what about alternators with inbuilt regulator,how do you
by pass the already installed reg?(underseat)
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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.
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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~
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do you have to touch the starter at all.
i see some people do.why?
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
RE57 is the one also used on 2 litre kombi s