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This product is for Professional and Advanced DIY mechanics. We supply the Tech help to make it work for you. Improper connection or failure to follow written instructions can result in damage to components and vehicle. These kits are not for High output alternators, they will not bring up low output voltage or low idle output, that is the alternator itself. Voltage regulators do not work at low engine RPM's. At idle it's all the alternator, they only control the top RPM voltage from overcharging. if your alternator is working good. If you are not sure if this kit will work for you, MESSAGE US

ERCKFRM-041

2006 and up Chrysler, Dodge, Jeep, and Plymouth vehicles. Contains Complete ERCKFRM Voltage Regulator kit plus, 3983041MOD Driver with plug.

Newer than 2006 requires kits with modified drivers

ERCKFRM071

ERCKFRM081

ERCKFRM091

ERCKFRM041

ERCKFRM051

NOT SURE WHICH KIT YOU NEED FRO YOUR VEHICLE, MESSAGE US

For finned version ad "F" to the end the letters, such as ERCKFRMF071 or ERCKFRMF081

This combo Heavy Duty External Voltage Regulator By-Pass Kit with Modified Driver w/plug used on 2006 and newer Dodge, Chrysler, Jeep that have a MITSUBUSHI 115 or 140 Amp unit that does not have the black plastic cover over the back of the alternator and the plug pulls straight out the back. This kit does not fit the BOSCH type alternator with Black Plastic cover over the back or the DENSO type units.

IMPORTANT NOTE: Adjustable voltage regulator may not increase voltage at Idle speed, the adjustment is for top end output . The only way to bring idle voltage output up is to increase Idle speed , smaller pulley, or a physically larger alternator.