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The brake lights on the "C" are on their own circuit (different wire from the Touring/Base); the brake lights on the Touring/Base are on a different wire that combines the brake function with the turn signals.
You can use the "C" harness to make the brake lights work alone, but you lose the function of the turn signals. If you use the stock harness without isolating the brake/turn signal... the turn signals come on when you hit the brakes.
The point is not "how many" bulbs are involved. The problem is which wires the bulbs are connected to.
The Forward Control Module (FCM) controls the functions of the lights-- and we found no way to change the "software/firmware" involved. Hence, the purpose of this thread-- you need to do a little rewiring at the FCM to fool it to make the lights work right.
MC
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Bright Silver 2006 300 Touring "El Patron"
Stealth Auto projection headlights, Kayee
mesh Bentley grill, SilverStar/Stealth bulbs,
RAQ radio upgrade, Sirius, auto headlamps,
lip spoiler, de-emblemed and "B"-emblemed,
tint, clear side marker lights, clear K2 LED
Altezza tail-lights, the "Luke" subwoofer
solution in rear armrest, Bob's Blasters dual
exhaust, Eonon 9.2" headrest LCDs, Sony
portable DVD player (center console).
Brilliant!! 
Last edited by italianguy63 : 02-26-2007 at 06:17 AM.
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