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Delco 10si 105 Amp Alt - Connect To Ammeter Direct?

Discussion in 'Flat Fender Tech' started by Wenaha, Apr 3, 2016.

  1. Apr 3, 2016

    Wenaha Member

    West Coast
    Feb 6, 2014
    Since I am planning on running a 8K winch and 800 CCA dual type battery on my cj2A, I installed a Delco 105 amp marine 10Si one-wire alternator on my L134. The wiring schemes I have seen show a primary direct connect to the ammeter. I have a couple of questions:

    1. If hooked up directly I think it will smoke the 30 amp ammeter I have in the dash. I think I need a 100+ amp ammeter. Right?

    2. I am very uncomfortable with that much energy going through the dash panel - even if it is fused. I thought I might be able to install a shunt near the alternator and pass the primary direct to the battery then to a fused distribution panel.

    Any ideas that might help?

  2. Apr 3, 2016
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
    Nov 22, 2003
    I'd give up on the ammeter entirely & go with a voltmeter or even just an idiot light run off the appropriate terminal on the alternator.

    Don't forget to upsize the wire from the alt to the battery/solenoid/distribution point of choice, for 100 amps I'd go with a #4, or even a # 2 gauge cable.

    Put in a fuseable link to the dash power distribution point if you don't have a 30 amp breaker on the back of the light switch and/or fuse panel.

  3. Apr 3, 2016

    nickmil Super Moderator Staff Member Sponsor

    Happy Valley, OR
    Sep 23, 2002
    What Howard said.

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