External Voltage Regulator Kit and Field Replacement Module for 1988 & up Chrysler Corporation Vehicles
Since 1987 for Dodge and Chrysler vehicles and since 1991 for Jeep Family vehicles have alternators that are controlled by the Alternator Voltage Regulator Control Module inside the vehicle computer.
Engine Control Unit (Computer).
The computer is often called the ECC, ECM, EEC, or PCM. Often the alternator voltage regulator, or field control module, in the computer will fail, leaving you with a dead charging system where your alternator doesn't work, yet your engine runs just fine. Before our external voltage regulator conversion kit, the entire computer would need replacement at a much higher cost.
In order to avoid costly computer replacement and get your alternator working, you can simply bypass the internal Alternator Voltage Regulator Control Module using our simple External Voltage Regulator conversion kit.
Heavy Duty Adjustable Voltage Regulator
Wiring harness to Alternator in split tubing with molded Plug to Regulator
14 Gauge Grounding wire from Regulator to Alternator
#10 Insulated Ring terminals 14/16
1/4" Insulated Ring terminal 14/16
Insulated Butt Splice Connectors
Flat Blade Connectors
Hex Head Regulator Mounting Screws
Regulator Grounding Screw
FRM ( Field Replacement Module )
Instruction Sheet (English) other language downloaded in PDF format, message me
NOTE: The FRM Module (gold color) is inserted beteen the two wires that go back to the vehicle's computer, which you remove from the alternator to install the external voltage regulator kit. Your vehicles' computer may be broken in such a way the FRM Module will not put out the check engine light in about 10 to 20% of the cases, but the external voltage regulator kit will work 100% of the time as long as your alternator is working.
The FRM module does NOT need to be grounded, where as, the metal case of the voltage regulator must have a good ground between the alternator, voltage regulator and battery. The FRM module may get hot
so don't wrap it up with tape
How to test your alternator on the vehicle:
To check to see if your alternator is working, unplug or remove the two field wires from the back of the alternator. Then ground one of the field terminals on the alternator and jumper the other field terminal to the positive battery post on the back of the alternator. It does not matter which terminal is grounded and which one get positive power. When you connect the ground and positive wires to the field terminals you will get a small spark, this is normal. This is by-passing the voltage control and will cause your alternator to run full blast, if it is working. Put a multi-meter on your battery and run your engine on high idle, do not allow your alternator to charge the battery much over 16 volts. If you find that your alternator is charging when you do this procedure, but does not charge when you connect it back to the computer, this kit will get your alternator working and charging at the proper voltage. The voltage regulator is preset at 14.5 volts. If you want to adjust the voltage regulator you use the screw on the back, but be sure the metal case of the voltage regulator is grounded while you adjust it.
Ref: QSERCK , ERCK, FRM, ERCK-FRM