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Glasser
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Joined: September 18, 2007
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Location: Calgary Alberta Canada
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 Posted: Fri Jun 24, 2016 6:45 pm Post subject: Converting to Internal regulator but don't have a Gen light |
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Need to pick your brains.....
I'm converting my electrical system to an internal regulated alternator from an external regulated alternator.
Very easy conversion.... However I have never ran a gen idiot light before.
I ran all my wiring through a flexible tube in the car so it would be impossible for me to run another wire front to back. I should have thought about this when I originally wired the car.....
With the internal regulator you need to "excite" the circuit momentarily to kick start the alternator.
Here is what I want to do....
Run a power wire from the starter solenoid to get the momentary power. I will run a light inline under the back deck lid (but wont be able to see it). I am running a Volt gauge so I can see if it's charging.
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Brent
My build up http://www.thesamba.com/vw/forum/viewtopic.php?t=265364&postdays=0&postorder=asc&start=0
Project#2. Neighbors build up. http://www.thesamba.com/vw/forum/viewtopic.php?t=327008 |
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Glasser
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Joined: September 18, 2007
Posts: 1640
Location: Calgary Alberta Canada
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jspbtown
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Joined: January 27, 2004
Posts: 5157
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| Posted: Fri Jun 24, 2016 7:24 pm Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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Ahh..that won't work.
The starter solenoid will only be very brief power (ie: while the engine is cranking). The engine needs to be running and you usually have to jab the throttle to around 2000 rpm to get everything going. You will lose the + signal way too quickly from the solenoid.
You can pull it from the + on the coil if you like. |
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Glasser
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Joined: September 18, 2007
Posts: 1640
Location: Calgary Alberta Canada
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| Posted: Fri Jun 24, 2016 7:26 pm Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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Is the + side of coil momentary?
That would work better yet, nice and close.
Edit.. Never mind I am confused with the "momentary" power required.
The alternator once excited cuts the connection to the light. I thought you needed momentary power form the supply side. That is why I thought the starter sol would be a good place for it.
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Brent
My build up http://www.thesamba.com/vw/forum/viewtopic.php?t=265364&postdays=0&postorder=asc&start=0
Project#2. Neighbors build up. http://www.thesamba.com/vw/forum/viewtopic.php?t=327008
Last edited by Glasser on Fri Jun 24, 2016 7:46 pm; edited 1 time in total |
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jspbtown
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| Posted: Fri Jun 24, 2016 7:43 pm Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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The + side of the coil is hot as long as the key is in the run position.
That's what you want. You don't want momentary.
If you have a stock carb you could also run it from the choke. |
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Glasser
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Location: Calgary Alberta Canada
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jspbtown
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| Posted: Fri Jun 24, 2016 7:48 pm Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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Actually the alternator doesn't really "cut" the connection.
When at rest the alternator provides the neg (-) charge for the circuit. Once excited that negative turns to positive and you have two positive charges going to the light and it goes out. |
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Glasser
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Location: Calgary Alberta Canada
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Dale M.
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Joined: April 12, 2006
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Location: Just a tiny bit west of Yosemite Valley
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| Posted: Fri Jun 24, 2016 10:21 pm Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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Run a wire off + side of coil to D+ on alternator THROUGH A DIODE wired in same manner as anti-run diode.... If you have a direct connection "without" diode (or lamp) you will probably have run-on...
In graphic where it says "to charging light"... Run it to + (#15) of coil....
Only way you can test to see if alternator is actually working without "ALT" idiot light is to validate it with volt meter...
Dale
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Glasser
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Joined: September 18, 2007
Posts: 1640
Location: Calgary Alberta Canada
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| Posted: Sat Jun 25, 2016 9:16 am Post subject: Re: Converting to Internal regulator but don't have a Gen light |
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Got it, Thx Dale.
I was having intermittent charging issues. Found 3/16th" end play in the Alt and brushes were super small so I swapped out another alternator. Then I had Zero charging (Used alternator was unknown condition). Might have been the external reg but I wanted to clean things up so I said the heck with it and bought a new chrome internal reg Alt not realizing I needed a light. Always something 
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Brent
My build up http://www.thesamba.com/vw/forum/viewtopic.php?t=265364&postdays=0&postorder=asc&start=0
Project#2. Neighbors build up. http://www.thesamba.com/vw/forum/viewtopic.php?t=327008 |
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Glasser
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Location: Calgary Alberta Canada
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