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Customizing alternator charging profile for Odyssey AGM batteries?

Discussion in 'Performance and Tuning' started by goffredo, Dec 10, 2019.

Page 2 of 2
  1. Jan 13, 2020 at 11:35 AM
    #31
    e30cabrio

    #31
    e30cabrio I'm e30cabrio, I'm a modaholic

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    Putting it in the wrong way had the battery light on.

    Thanks.
     
    e30cabrio, Jan 13, 2020
    #31
  2. Jan 13, 2020 at 12:47 PM
    #32
    blizz86

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    blizz86 New Member

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    Would the gm diode just plug into an add a fuse with the stock fuse as well?
     
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    blizz86, Jan 13, 2020
    #32
  3. Jan 13, 2020 at 1:00 PM
    #33
    Jrharvey02

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    Jrharvey02 New Member

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    No, w/ an add-a-fuse you are left with a pigtail for your new fused accessory, which then behaves as two separate fused accessories. You wouldn’t be able to tie the added fuse into anything using the pigtail, if you get what I’m saying...
     
    Jrharvey02, Jan 13, 2020
    #33
  4. Jan 13, 2020 at 1:22 PM
    #34
    blizz86

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    blizz86 New Member

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    That makes sense. I was confused because I’ve been reading threads where people are making their own. Is there any apparent danger to just using the gm diode without a fuse?
     
    blizz86, Jan 13, 2020
    #34
  5. Jan 13, 2020 at 1:29 PM
    #35
    Jrharvey02

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    Jrharvey02 New Member

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    Probably a bit...
     
    Jrharvey02, Jan 13, 2020
    #35
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  6. Jan 13, 2020 at 1:52 PM
    #36
    blizz86

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    blizz86 New Member

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    Bought the HKB off ebay.

    For the others reading: $50 shipped to us.
     
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    blizz86, Jan 13, 2020
    #36
  7. Jan 13, 2020 at 4:30 PM
    #37
    blackoutt

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    blackoutt YEAH BUDDY!

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    The GM diode IS a fuse too 7.5amp I believe. I don't have one at the moment to check.
     
    blackoutt, Jan 13, 2020
    #37
  8. Jan 13, 2020 at 4:47 PM
    #38
    Vizsla

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    Vizsla ☠️☠️☠️

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    I have the $24 one from EBay, no complaints.
     
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    Vizsla, Jan 13, 2020
    #38
  9. Mar 24, 2020 at 9:57 AM
    #39
    TruckyTruck

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    TruckyTruck Dumbest Username

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    I'm glad to have found this thread. On the way to work I stopped off for gas and my truck barely started back up. I ordered a Northstar 31A and a mk4 adjustable.
     
    TruckyTruck, Mar 24, 2020
    #39
  10. Mar 24, 2020 at 12:38 PM
    #40
    Danimal86

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    Danimal86 Looks clean even when its dirty!

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    I'm torn.
    I've been running a northstar 27f for a little over a year now. I mainly got one, because i know the factory batteries are just a ticking timebomb, and i dont want to get stranded anywhere.

    Learning about this now has me curious. On one hand, if it aint broke, dont fix it....and on the other, i want this battery to last.....maybe i'll email northstar.
     
    Danimal86, Mar 24, 2020
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  11. Mar 24, 2020 at 12:41 PM
    #41
    TruckyTruck

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    TruckyTruck Dumbest Username

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    From what I read, you may be fine with the diode fuse. I bought the adjustable one since I pull a camper a lot. The camper batteries take a charge from my truck.
     
    TruckyTruck, Mar 24, 2020
    #41
  12. Aug 13, 2020 at 9:03 AM
    #42
    DSTundra

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    DSTundra New Member

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    Did you ever email Northstar? If so, what did you find out? I just ordered a Northstar 27F today, so I'm curious...

    Dave
     
    DSTundra, Aug 13, 2020
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  13. Aug 13, 2020 at 9:54 AM
    #43
    Danimal86

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    I didn't, i ended up getting the diode to go in the Alt-s fuse location and it upped my charging voltage a half a volt.
     
    Danimal86, Aug 13, 2020
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  14. Sep 6, 2020 at 9:13 PM
    #44
    Danimal86

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    Just pull the trigger now before the stock one leaves you stranded
     
    Danimal86, Sep 6, 2020
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  15. Sep 6, 2020 at 9:18 PM
    #45
    Danimal86

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    Danimal86 Looks clean even when its dirty!

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    Very good idea. I pulled my factory battery at about 6mo old (there was a group buy at the time, that may have helped a little) after reading about the factory batteries.
    With the noco, youll be good
     
    Danimal86, Sep 6, 2020
    #45
  16. Sep 23, 2020 at 9:22 PM
    #46
    ttime4four

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    ttime4four New Member

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    Awesome info and great thread. I purchased my diode from Mouser Electronics for $11.20 ($3.21 + $7.99 2-day shipping). Slight trim and it fit right into the ALT-S slot. Here are the voltmeter readings:

    Before - 13.88 VDC
    After - 14.34 VDC

    I put it in backwards at first and the BATTERY light remained on after start. Switched it around and the battery light turned off. For my 2020 Tundra, the correct orientation of the "arrow" on the diode points forwards.
     
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    ttime4four, Sep 23, 2020
    #46
    R65, 619Tundra and blackoutt[QUOTED] like this.
  17. Sep 24, 2020 at 7:48 PM
    #47
    619Tundra

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    619Tundra New Member

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    Awesome. I will order one tonight.
     
    619Tundra, Sep 24, 2020
    #47
  18. Sep 24, 2020 at 8:04 PM
    #48
    619Tundra

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    619Tundra New Member

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    Looks like HKB has 3 different ones. 5.0A, 7.5A, and a charger.
     
    619Tundra, Sep 24, 2020
    #48
  19. Dec 4, 2021 at 8:10 PM
    #49
    AZTundra

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    AZTundra No Longer a New Member

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    AZTundra, Dec 4, 2021
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  20. Dec 4, 2021 at 8:11 PM
    #50
    SouthWestGA

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    SouthWestGA New Member

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    I installed a GM diode after reading Tacoma and 4Runner forums . It’s much cheaper and is the same thing
     
    SouthWestGA, Dec 4, 2021
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  21. Dec 4, 2021 at 8:13 PM
    #51
    AZTundra

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    AZTundra No Longer a New Member

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    Thanks for the quick response. I was looking at that option also and just might go that route for now. For checking the voltage are you just using the multimeter while the engine is idling?
     
    AZTundra, Dec 4, 2021
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  22. Dec 4, 2021 at 8:15 PM
    #52
    e30cabrio

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    e30cabrio I'm e30cabrio, I'm a modaholic

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    I have the 7 amp in my Sequoia with the Battery plus Northern AGM
     
    e30cabrio, Dec 4, 2021
    #52
    AZTundra likes this.
  23. Dec 4, 2021 at 8:36 PM
    #53
    SouthWestGA

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    SouthWestGA New Member

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    Yes i checked it that way and also ran a digital volt meter into the cab for a few weeks .
     
    SouthWestGA, Dec 4, 2021
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  24. Dec 4, 2021 at 8:40 PM
    #54
    AZTundra

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    Perfect, thanks!
     
    AZTundra, Dec 4, 2021
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  25. Dec 5, 2021 at 12:02 AM
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    R65

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    R65, Dec 5, 2021
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