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Author Topic: Where to install the FRM for jeep vehicles  (Read 3064 times)

Juha

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Where to install the FRM for jeep vehicles
« on: August 14, 2013, 06:12:44 PM »
I think that it should be installed in between the two wires you cut when installing the external regulator on the side  that would not be used. " Bosch alternator schematics.".

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Where to install the FRM for jeep vehicles
« on: August 14, 2013, 06:12:44 PM »

drew

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Re: Where to install the FRM for jeep vehicles
« Reply #1 on: August 19, 2013, 02:53:33 PM »
The FRM attaches to your old regulator connections. I have attached a simple diagram. There are some things to be sure of before you install the FRM:

  • Be sure the regulator is adjusted (it's set at 14.5V from the factory) so that you see a good charging voltage at the battery (14.2 to 14.5) before connecting the FRM.
  • Make sure there is a good ground connection to the regulator. That means a small wire from the regulator's metal case to the alternator case, then a large wire from the alternator case to the battery.
  • Make sure you have a good ignition connection to the regulator. This connection is battery voltage sense for the regulator, so if the voltage is low here the alternator will over-charge. This ignition line has to be at the same voltage as your battery, and always hot when the key is on (not just when the starter activates). If you have a weak ignition from the keyswitch, you need to add a relay to switch power directly from the battery.

Then you wire up the FRM to your old regulator connections. Be sure these only connect to the FRM, make sure they aren't connected to the alternator regulator connections or grounded. Also, don't use any tape on the FRM connections, as they can heat up.