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jaymonkey
Samba Member
Joined: September 13, 2005
Posts: 433
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 Posted: Mon Oct 02, 2006 7:53 pm Post subject: Alternator Clear up Please |
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Alternator/External reg (AL78X)
TO
Alternator/Internal reg (AL82N)
I know that this has probably been beat to death, but all the different links and how-to's vary slightly. I think I know what I am going to be doing I just need a confirmation that my head isn't mixed-up and I'm totally backwards.
1. Connect Battery lead to Alternator B+ (this is pretty straight forward and consistant in all the instructins)
2. Pull the D+ lead (which is a red wire with a blue wire pig-tail, warning light in the instrument cluster) from the external regulator and put a connector on it and run it to the D+ terminal on the alternator.
Is there anything I'm missing?
Thanks a bunch
Jason |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76911
Location: Sneaking up behind you
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jaymonkey
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Joined: September 13, 2005
Posts: 433
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| Posted: Mon Oct 02, 2006 8:16 pm Post subject: |
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I saw that diagram.
By that diagram I think I'm on the right track. On the diagram they say green wire to blue wire. The Blue wire is spliced in with red wire correct?
So this would actually be D+ (red and blue on one connector) and DF spliced together and connected to D+ on the alternator?
http://www.thesamba.com/vw/archives/info/wiring/74-up113wiring.jpg
I'm assuming the green wire is DF from the above diagram
What I find confusing about the simple diagram is the reference to the green wire. All other instrustions I have refer only to D+.
Thanks
Jason |
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volkenstein
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Joined: June 26, 2005
Posts: 858
Location: The Land of Oz
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| Posted: Mon Oct 02, 2006 9:20 pm Post subject: What you have done is correct |
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Jaymonkey,
You've nailed it. On a Gennie, Green is D+ and this wire is spliced into the blue idiot light feed when you change to an Int Reg Alt.
On a Ext Reg Alt, Red is D+ and has the idiot light spliced off it.
So you say you have tossed the Ext Reg Alt for an Int Reg Alt, then D+ (Red) is the sole wire that needs to be connected and so long is you have a seamless connection all the way up to the idiot light from your D+ wire you are home and hosed. Your heavy B+ stays as is.
Volkenstein
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71 RHD AS Super - "Klaus"...
Wisdom of youth, energy of old age... |
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jaymonkey
Samba Member
Joined: September 13, 2005
Posts: 433
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| Posted: Mon Oct 02, 2006 9:28 pm Post subject: |
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Ok,
And the rest of the wires going into the external reg can just be discarded?
Thanks a bunch. My head hurts from trying to make sense of it. You shed some serious light on the situation. Thanks Volkenstein
Jason |
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volkenstein
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Joined: June 26, 2005
Posts: 858
Location: The Land of Oz
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| Posted: Mon Oct 02, 2006 9:31 pm Post subject: Yep |
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Jaymonkey,
Tape them up and put them out of harms way. Then donate the Ext Reg Alt to a charity, namely me  .
Enjoy
Volkenstein
_________________
71 RHD AS Super - "Klaus"...
Wisdom of youth, energy of old age... |
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jaymonkey
Samba Member
Joined: September 13, 2005
Posts: 433
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| Posted: Tue Oct 03, 2006 6:06 pm Post subject: |
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It's no good to me. It's yours if you want it.  |
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focuszx3r
Samba Member
Joined: March 30, 2006
Posts: 299
Location: Kent Lakes, NY
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| Posted: Wed Oct 04, 2006 5:40 am Post subject: |
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I didnt have to splice any of the wires giong to my regulator when I went from an externally to internally regulated alternator this weekend. My warning light appears to work properly. The Bentley didnt mention anything about splicing in it's blurb on this change. Did I do it right?
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volkenstein
Samba Member
Joined: June 26, 2005
Posts: 858
Location: The Land of Oz
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| Posted: Wed Oct 04, 2006 6:40 am Post subject: Wrong terminology |
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Focuszx3r,
On an Ext Reg Alt wiring, the red D+ to idiot light connection is already made. "Spliced" was perhaps the wrong adjective!!
You shouldn't have any problems.
When you change a gennie over you have to make the connection between the green and blue wires yourself.
HTH
Volkenstein
_________________
71 RHD AS Super - "Klaus"...
Wisdom of youth, energy of old age... |
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John M.
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Joined: July 22, 2005
Posts: 3833
Location: Boulder, CO
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| Posted: Wed Oct 04, 2006 9:20 am Post subject: |
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Converting from an AL78X (3 Prong Connector) to AL82...don't splice anything! It's very very simple.
Remove regulator from underneath rear seat. Done, no more messing around back there.
Heavy gauge wire (red/white) goes to the ring terminal on new alternator. Cut the green/brown wires at the insulation tubing, you will not need these anymore. The small gauge red wire goes to the spade terminal on new alternator.
DONE!
Should look similar to this when your done:
_________________
Current: 1972 Beetle - 96V EV
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focuszx3r
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Joined: March 30, 2006
Posts: 299
Location: Kent Lakes, NY
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| Posted: Wed Oct 04, 2006 1:12 pm Post subject: |
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Nice engine. I installed the BMD serpentine system and I really love it. Its a great little kit.
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I love my 55 Oval. |
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jaymonkey
Samba Member
Joined: September 13, 2005
Posts: 433
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| Posted: Wed Oct 04, 2006 5:53 pm Post subject: |
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| The installation was pretty simple. To many directions. Seems to be working well. |
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jaymonkey
Samba Member
Joined: September 13, 2005
Posts: 433
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| Posted: Wed Oct 04, 2006 6:18 pm Post subject: |
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Actually. I have an issue. I have a "whirring" sound coming from the cooling fan. Anyone encounter this?
Jason |
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