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Old 10-18-2013, 12:59 PM
dooramit dooramit is offline
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Join Date: Jul 2012
Location: Wisconsin
Posts: 4
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Vehicle: 2010 RAM 2500HD
Trim Level: Laramie
Engine: 2007-2011 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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Obviously, load resistors can be used on truck. Or based upon your truck's year you might have other cleaner & more reliable options:

For 2009 trucks the only method is to use load resistors.

For 2010 & 2011 trucks the "LBQ" sales code can be flashed to the TIPM (this requires dealer involvement).

2012 trucks have what I call a "LED Prep" wire already installed, you just have to find the L950 light green w/ with tracer wire near the Power Distribution Center in the engine compartment and ground it (it's coiled up with 4 additional wires & terminated with heat shrink).

2013 trucks have a few different ways to stay away from resistors: 1. if you have a VSIM in your truck you can find & ground the proper wire. 2. Cut the proper wire located at the CBC up under the dash by parking cable & above Alpine amp if you have the premium sound & ground it. 3. Use wire terminal kit #P68225777AA (which might already be included & laying in the glove box) to add a wire to an external connector located on driver's side behind front wheel well liner and grounding it.

All of this info I've acquired from the RAM Body Builder site with easily understandable color photos and step-by-step directions in PDF format. Because of where this all came from, there's no guarantee that '12 or '13 1500s or certain 2500s/3500s will have the proper wiring to stay away from resistors. My cousin has a '11 1500 and the dealer successfully flashed "LBQ" and it works. My '10 2500 has been flashed with "LBQ" and it works. My brother-in-law has a '12 2500 and it has the "LED Prep" wire and it works.

As for resistors...RAM specifies "9 or 10 Ohm 50 Watt load resistors." Seems a lot of people are using 6 Ohm 50 Watt and seem to work fine. I'm not an electrician so I don't know which one would actually be the best to use and/or which would be the cooler operating resistor...
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