Pull the bulb back out and check that crappy connector to make sure it is soldered in good and that it didnt move around switching the bulb out. If you can't find a test procedure for your model/year, I am not sure how similar the TC ACM system is to the 01's but try downloading the 03 Service manual for the C/TC and work package 19 has some test procedures in it to test the module. My bet is on the signal housing assembly.
2011 White Vision - Nuvi 550, Lowers, Lloydz 2nd filter, Vic perf filter, CB/Icom, 96 Brake LED's, Clear Signal lens/Switchbacks, VIC Hwy Pegs, Stebel Horn, 7Jurock 15" Shield, PCV, Lloyd ATS and Variable intake, Ness honkers
2004 V92 TC - S1 flash, level 1 slip-on, Ness big sucker K&N, ISO Grips, 4x1.5 Highway Hawg Risers, extra chrome (never too much), JM 2k CB 4' antena, Mustang seat, HD Front TS & Lowers, OD Pulley
Retired Navy SCPO