| [ Total Views: 4649 | Total Replies: 4 | Thread Id: 19885 ] |
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 Andy
Son of Jim - Creator of Good
Andy's Adventures
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| posted on March 5th, 2004 at 10:42 PM |
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Kombi Alternator wiring???
Anybody familiar with hooking them up? (type 4 motor)
According to the wiring diagram, red cable to D+, green cable to DF (on regulator), brown cable to ground (or D- on reg) and black cable to battery
positive. A cable also goes from D+ to the idiot light on dash.
All the kombi's I have played with have the black cable disconnected, as is Andy's and seem to work fine.
SO does anyone know what the black cable is for and if it should be connected to battery positive or not?
Cheers,
Andy :thumb
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Old Dubber
Wolfsburg Wizard
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| posted on March 6th, 2004 at 02:46 PM |
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Andy,
Mine is also disconnected from when I converted to the Type 4 engine.
I thought it may have been part of the diagnostics connection.
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Andy
Son of Jim - Creator of Good
Andy's Adventures
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| posted on March 6th, 2004 at 10:00 PM |
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OK, best I've found is some early models had the black cable connected to the heater fan relay so it can only turn on while the alternator is
charging. This was discontinued in later models.
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modulus
A.k.a.: Peter Hill
Veteran Volks Folk
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| posted on March 7th, 2004 at 01:30 AM |
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BAY ALTERNATOR WIRING
===================
I've just done a run-through on the Bay-Window wiring diagrams, since the alternator wiring puzzles also affect dual-battery management
systems, for which I'm trying to write an overview for the Kombi Camping site. I'm now cross-eyed and slightly dizzy.
You're correct that there is special treatment for the heater fan, since this is a high-current motor that shouldn't be running when trying
to start the motor, but as far as I can see it has never been related to the mystery black wire, which has been a diagnostics feed since it appeared
in about 1971 model year.
EARLY BAYS
=========
"VW Type 2 - from August 1967 (1968 and 1969 Models)" VWoA
-------------------------------------------------------------
These generator-equipped Bays have
Red to D+ and
Green to DF - that's it.
From the Regulator a Blue runs to the "Generator & Fan warning light" :- the fan being referred to is the engine fan in case of belt
breakage.
As for a heater fan :- not fitted.
This description is also a fair summary for the several variations of the early Bus wiring diagrams which I also reviewed.
MID BAYS
=======
"VW Type 2 from August 1969 (1970 models)" VWoA
--------------------------------------------------
Green to DF
Red to D+
Brown to D-
From the Regulator a Blue runs to the "Generator charging warning light"
As for a heater fan :- not fitted.
"VW Type 2 from August 1970 (1971 models)" VWoA
--------------------------------------------------
Generator-equipped
Green to DF
Red to D+
Brown to (illegible, on the Regulator; most probably an explicit earth, i.e. D-)
Black to terminal 14 on the on-board diagnostics test socket
"VW Type 2 from August 1971 (1972 models)" publisher not stated
---------------------------------------------------------------
Generator-equipped
Green to DF
Red to D+
Brown to D-
Black to terminal 14 on the on-board diagnostics test socket
D+ feeds the heater air blower, the "Generator charging warning light" and the dual-circuit brake warning lamp.
LATE BAYS
=========
"VW Type 2 - from August 1972 (1973 through 1975 models)" VWoA.
--------------------------------------
Red to D+
Green to DF
Brown to D-
Black to terminal 14 on the on-board diagnostics test socket
A blue wire from the regulator's D+ feeds the heater fan switch, the heater fan motor relay and the alternator warning light (and the
dual-circuit brake warning lamp).
Whilst I've used the VWoA diagrams for the above, I also snuck a peek at the German, non-US versions and they confirm the same story. On-board
diagnostics were a big issue in the US in the '70s, as they were seen as a way to keep cars smog-legal, but I guess not taken so seriously
here.
hth
[Edited on 8-3-2004 by modulus]
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Paul Aslanides
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| posted on June 13th, 2004 at 02:06 PM |
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Thanks for the info, Peter.
And the Kombi Camper Site.
Cheers.
Paul.
'76 Dormobile.
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Paul Aslanides
Commited Dubber
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| posted on June 13th, 2004 at 07:43 PM |
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Underneath my '76 Kombi, on the right hand side, just to the right of the starter motor and the fuel lines from the tank, and just above the plastic
bellows which connects the heater supply tubes, there is a small electrical relay. It is atatched to a short 'L' shaped steel strap. And covered
in years of road muck. Of course I can't get it off because it has a phillips screw, which I can't budge. A couple of the wires from this relay go
to the starter; they are only small dia. wires, not starter current size.
Is it correct to assume that this is the relay which prevents the starter being engaged without switching off the ignition first ? If so, in that
case perhaps I should leave it alone. Unless replacing it will make the starting circuits and components more reliable ?
Your advice appreciated.
Cheers.
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
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| posted on June 13th, 2004 at 09:14 PM |
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It could just be a starter relay Peter...
I have rewired My Beetle and I have a relay close to the starter motor.... instead of power from the battery going All the way to the starter key
switch and then back to the starter motor solenoid it just goes from the battery to the starter motor solenoid...
a much shorter circuit and starter motor solenoids love it...
No Voltage drop and Your key switch will last much longer also as very little current running thru it...
Lee
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- [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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