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brownm3

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  4. little help with my alt please

    in MechMan Alternators and 12v Accessories

    Posted

    Most parts house testers can't pull enough load to properly test high output units.

    You are charging if your voltage is above battery resting voltage, and 13.5-14v is for sure charging. The most common problem I see is inadequate ground, followed by weak power storage (batteries).

    The voltage dropping when the vehicle warms up is normal, that is why we have the AVBM set with the alternator cold, it prevents overcharging.

    You should have 1/0 cables directly from the alternator to the battery under the hood for charge and ground using the lugs we provided. We provide properly sized solid copper lugs to prevent problems with your ground and charge connections.

    The ground should be run directly to the battery, not to the engine, body or frame, directly to the battery under the hood.

    You posted in the thread by our friend from Panama, sounds like a similar problem and you will most likely find inadequate ground or a bad battery. Properly installing the ground resolved his issue.

    This thread: http://www.stevemeadedesigns.com/board/topic/127374-something-wrong-with-my-mechman/page__st__60

    Disconnect all of your batteries, fully charge them and load test them. Note the voltage after charging and after load test. Then let them sit disconnected overnight, check the voltage again. All should be within .1-.2v of eachother.

    Be sure you have the unit properly grounded as instructed.

    Ok so my alt is definitely charging properly because my resting voltage sits in the range 13.5 – 14v. But if I read this correctly the proper ground for the big 3 should be to ground the alt to the battery under the hood and not the body? Everything I have read and be told has been to ground it to frame or body.

    Any explanation or benefits as to why the alt should be grounded to the negative battery vs the frame? Please educate me that way if someone asks me I can pass it along. Sorry to thread jack OP :peepwall:

  18. My LVL 6 12 D2

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    what did that cost you? wish i could afford to replace my (4) l7s with 2 of those!!!

    selling all 4, you probably wouldnt have enough for 1.

    Haha. Yeah that would get you a down payment on one.

    Chevy - Completely off topic but FOURxRUOF's post in your signature block :rofl: :rofl: :rofl: :rofl:

    Back on topic -

    Bad ass sub Orion! Cant wait to see some vids of that mofo tearing the mustang apart. Damn sexy sub!

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