Mechman MM-VC1 2005 Newer GM/Chevy 2-Pin RVC Voltage Controller — Big Jeff Audio Dealer Platform
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  • The Mechman MM-VC1 offers a professional and straightforward installation for controlling 2005> GM 2-pin equipped alternators.
  • Ideal solution for enhancing voltage stability or accommodating higher voltage needs in stock GM RVC System applications.
  • Provides an easier alternative to the traditional 4-pin/1-wire/P103 setup without removing the alternator from the vehicle.
  • Simple online purchase and easy installation with detailed instructions – requires only a 12v switched source and ground connection.
  • Allows charging from battery resting voltage to 15.5 volts, ensuring versatility for various power demands.

Mechman MM-VC1 2005 Newer GM/Chevy 2-Pin RVC Voltage Controller

This Listing Includes:

  • (1) MM-VC1 Voltage Controller

Introducing the Mechman MM-VC1, a revolutionary solution for controlling 2005> GM 2-pin equipped alternators. Designed to enhance voltage stability and accommodate higher voltage needs, this voltage controller offers a hassle-free alternative to the traditional 4-pin/1-wire/P103 setup. No more removing the alternator, no shipping, and no vehicle downtime. Simply purchase online, follow the detailed instructions, and connect only a 12v switched source and ground wire to the vehicle. It's that easy! The MM-VC1 ensures a seamless transition from battery resting voltage to 15.5 volts, providing a convenient and versatile solution for various power demands.


  • Professional and straightforward installation

  • Controls 2005> GM 2-pin equipped alternators

  • Ideal for enhancing voltage stability or accommodating higher voltage needs

  • Easier alternative to the traditional 4-pin/1-wire/P103 setup

  • Easy online purchase and simple installation with detailed instructions


  • Voltage Range: 12.4 volts (resting) to 15.5 volts

  • Default Setting: GM 2-pin alternator defaults to 13.5 volts

  • Adjustment: UP/DOWN buttons for duty cycle adjustment

  • Safety Feature: Defaults to 13.5 volts if adjusted too low or too high

  • Wiring Harness: High-quality waterproof connectors

Typical uses:

  • Motor swaps

  • Custom lithium battery banks / different lithium battery chemistry charging ranges.

  • Multiple alternator setups (tested on 3 at one time / verified)

  • Using 2pin alternators in 4pin vehicle applications.

  • OEM alternator voltage boosting, not amperage increasing.


  • Solve electrical issues the vehicle may already have.

  • Fix broken / non-working alternators.

  • Substitute a low amperage output alternator for a high output alternator need. Voltage only, not amps.

  • Fix voltage drop from inadequate battery bank and high draw add on items such as large wattage audio amplifiers.

  • Voltage adjustment is meant to be set and forget.  Hot temperatures = lower voltage, cold temperatures = higher voltage.

Payment Information


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Shipped orders that are returned by the shipping company due to an
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20% restocking fee.

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Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.