Results 1 to 16 of 16

Thread: External voltage regulators crapping out

  1. #1
    Hybrid booster
    Join Date
    Mar 2013
    Location
    Wastelands of NJ
    Posts
    637

    External voltage regulators crapping out

    I did the external voltage regulator conversion on my Spirit R/T, and it seemed to be working fine, other then the fact that I am about to replace my regulator for the 3rd time in a few months. At first I had a Standard Ignition one in, and it crapped out after a couple of months. Then I put in a Transpo adjustable one, and it crapped out after a week. So now I'm going to install another Standard Ignition one. Hope that crappy parts are my only problem.

  2. #2
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
    Join Date
    Mar 2014
    Location
    Toronto Canada
    Posts
    1,257

    Re: External voltage regulators crapping out

    how do you have it wired in ?

    I've seen posts saying to wire one lead to a switched power wire or some such but all I've ever done (in many many cars) is connect both field wires to the external voltage regulator .. no switched power , no b.s.
    I just cut the field wires and run them straight to the regulator .. I haven't even ever worried about which wire to what pin on the regulater

    never had an issue with it/them this way

  3. #3
    Hybrid booster
    Join Date
    Mar 2013
    Location
    Wastelands of NJ
    Posts
    637

    Re: External voltage regulators crapping out

    Mine is wired to switched power. It seems to work fine at first but then the regulators crap out. It's not like they are getting over voltage or anything that should make them crap out.

  4. #4
    turbo addict
    Join Date
    Apr 2006
    Location
    Baltimore,MD
    Posts
    2,877

    Re: External voltage regulators crapping out

    I would definitely check the grounds. Clean where the case of the VR is grounded and add some dielectric grease. I added a wire from one of the case holes to a separate ground location right next to it. Stay away from the adjustable VR IMO. Good old Standard should last you a LONG time.

  5. #5
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
    Join Date
    Mar 2014
    Location
    Toronto Canada
    Posts
    1,257

    Re: External voltage regulators crapping out

    all I can suggest is rewire it to just the two field wires and drop the switched power as it's definitely not needed

    I've done the ex regulator in at lest 8 cars I can think of off hand and never had any problems

    I've only ever wired the two field wires to the v-r pigtail - didn't even worry about which to what

  6. #6
    Hybrid booster
    Join Date
    Mar 2013
    Location
    Wastelands of NJ
    Posts
    637

    Re: External voltage regulators crapping out

    Quote Originally Posted by rx2mazda View Post
    I would definitely check the grounds. Clean where the case of the VR is grounded and add some dielectric grease. I added a wire from one of the case holes to a separate ground location right next to it. Stay away from the adjustable VR IMO. Good old Standard should last you a LONG time.
    I did exactly what you stated when I installed the set up. Hoping the new Standard regulator takes care of the problem.

    Quote Originally Posted by Dr. Johny Dodge View Post
    all I can suggest is rewire it to just the two field wires and drop the switched power as it's definitely not needed

    I've done the ex regulator in at lest 8 cars I can think of off hand and never had any problems

    I've only ever wired the two field wires to the v-r pigtail - didn't even worry about which to what
    If my new regulator doesn't do the trick I'll get back to basics like you've suggested.

  7. #7
    Supporting Member II Turbo Mopar Contributor tryingbe's Avatar
    Join Date
    Dec 2005
    Location
    Mesa, AZ
    Posts
    7,183

    Re: External voltage regulators crapping out

    I wired it as the picture. Zero issue so far.


  8. #8
    Super Moderator Turbo Mopar Staff contraption22's Avatar
    Join Date
    Dec 2005
    Location
    Havertown, PA
    Posts
    9,419

    Re: External voltage regulators crapping out

    Quote Originally Posted by tryingbe View Post
    I wired it as the picture. Zero issue so far.
    That's how I have mine wired as well.
    Mike Marra
    1986 Plymouth Horizon GLMF "The Contraption" < entertaining sponsorship offers
    Project Log:
    http://www.turbo-mopar.com/forums/showthread.php?69708-The-Contraption-2013-14&highlight=

  9. #9

    Re: External voltage regulators crapping out

    Run a Toyota Camry alternator that has the built in regulator and splice the wires into the system. Its basically the same Nippendenso alternator with the regulator onboard. I have one wire going to the original signal (green wire I think) and one to the fuse box I installed. Works fine for my car.
    [SIZE="3"] [B]Jon Trotter[/B][/SIZE] [B]1985[/B] Dodge Shelby Charger, Currently decommissioned [B]1987[/B] Shelby GLHS, #937 [B]1987[/B] Shelby Lancer, #628 [QUOTE=Reeves;587010]I can be ready. Please send pics of wife. _____DodgeZ add comments here______[/QUOTE]

  10. #10
    Hybrid booster
    Join Date
    Mar 2013
    Location
    Wastelands of NJ
    Posts
    637

    Re: External voltage regulators crapping out

    Took the car to my buddy, who is a much better electrical troubleshooter then I am, and after doing a series of tests he claims my alternator is shot. Oh well. Debit card out, Rock Auto on speed dial...

  11. #11
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
    Join Date
    Mar 2014
    Location
    Toronto Canada
    Posts
    1,257

    Re: External voltage regulators crapping out

    I'd kinda like to hear the reason for the switched power wire

    my way with just the two field wires run to the v-r came from one of the mechanics working at the dealer I used to go to

    casually walking across the shop he just said cut the field wires and connect them to the v-r
    - doesn't really matter which wire where on the pigtail - so that's how I've always done it

    even to the point of letting the "OCD" take over and installing one before it's needed
    I get a pair of same type two wire connectors and put them on the field wires behind the battery , after the multy plug connection for the front of engine harness - then I can still unplug the harness normally
    I put one half of the connector on the field wires and the other two same half connectors on the wires running to the external regulator and the PM/Smec

    then if the headlights start to go dim I can simply unplug one regulator and plug in the other
    or , so goes the plan .... after,

    one afternoon working on my car at a buddy's shop , comes around time to go home
    rush hour , early winter - so it's already dark and just starting to snow

    my car idling in front of the shop seems to sound odd and the headlights are about half what they should be
    shut the lights off and it sounds ok
    (pray)
    20 minute drive home but luckly buddy lives right around the corner so I can follow him home

    I make it home , no issue but the car sounds rough
    my buddy pulls in the driveway to the side and sprints for the garage door to swing it open

    just in time as I get to the door , rolling it bounces the front wheels up the step of the edge of the garage floor .. and stalls , with just enough energy in it to get the back wheels up over the edge and all the way in to the usual parking spot in the garage

    it was one of those skin of the teeth wins that made you knew you just had a gift of some sort

    (I apologize for the following somber turn)

    - a gift maybe more important as buddy , a former TM brother in arms so to say , a long time buddy from around the corner , now a 20 odd year EX buddy - you know how that goes ,

    seems he had a bad year , lost a son right after Christmas and then his Dad 7 weeks later
    and decided last week that he didn't want to play the game of life no more

    his name was Marc - I called him Wylie-P-file-e one day and it stuck (after Wylie Coyote)
    his last name was Pfeil (file)

    sorry guys I had to share - he was one of "us" way back when ,eventhough he's never been here

  12. #12
    Supporting Member II Turbo Mopar Contributor tryingbe's Avatar
    Join Date
    Dec 2005
    Location
    Mesa, AZ
    Posts
    7,183

    Re: External voltage regulators crapping out

    Quote Originally Posted by Dr. Johny Dodge View Post
    I'd kinda like to hear the reason for the switched power wire
    https://youtu.be/utXjxwPAcHk?t=181

  13. #13
    Hybrid booster
    Join Date
    Mar 2013
    Location
    Wastelands of NJ
    Posts
    637

    Re: External voltage regulators crapping out

    Turns out it was my alternator. Feels good to be back on the road.

  14. #14
    Moderator Turbo Mopar Staff Force Fed Mopar's Avatar
    Join Date
    Dec 2005
    Location
    Greenville/Spartanburg SC area
    Posts
    7,537

    Re: External voltage regulators crapping out

    Quote Originally Posted by tryingbe View Post
    So why does it work even if you don't have it hooked to power?
    Rob M.
    '89 Turbo GTC
    2.5 TIII swap is here!

    Project LookOwt
    '91 Daytona ES, 61k original miles, Rick Lozier's old 3.0 nitrous car
    Back to basics, then the mods go back on....

  15. #15
    Supporting Member II Turbo Mopar Contributor tryingbe's Avatar
    Join Date
    Dec 2005
    Location
    Mesa, AZ
    Posts
    7,183

    Re: External voltage regulators crapping out

    Quote Originally Posted by Force Fed Mopar View Post
    So why does it work even if you don't have it hooked to power?
    Sounds like that method will set the the alternator full on all the time.

    https://itstillruns.com/automotive-v...k-5024418.html

  16. #16
    Garrett booster
    Join Date
    Jun 2016
    Location
    Janesville, WI
    Posts
    177

    Re: External voltage regulators crapping out

    Quote Originally Posted by Force Fed Mopar View Post
    So why does it work even if you don't have it hooked to power?
    It won't but one of he green wires in the harness is already switched 12v. I think it even turns to a dark blue wire on the chassis side of the sub-harness plug. All you have to do is connect the reg to the field terminal wires and(in case the SMECs regulator is shorted etc) cut the green field wire going to the SMEC, although I don't see how it would work if you got the two wires switched in that scenario.

Similar Threads

  1. How to convert to an external voltage regulator
    By Frank in forum Electrical Systems
    Replies: 0
    Last Post: 08-16-2012, 11:06 PM
  2. External voltage regulator mod question
    By Reaper1 in forum Electrical & Fuel System
    Replies: 24
    Last Post: 02-22-2011, 12:22 AM
  3. external voltage regulator
    By Austrian Dodge in forum Electrical & Fuel System
    Replies: 15
    Last Post: 08-19-2008, 01:47 AM
  4. Why am i blowing voltage regulators?
    By problemaddict in forum The Original "Turbo Dodge" Cars
    Replies: 9
    Last Post: 01-24-2008, 05:58 AM
  5. External voltage regulator
    By 1FastCSX289 in forum Electrical & Fuel System
    Replies: 5
    Last Post: 04-13-2007, 01:23 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •