I wonder how they test it, if the TPMS module 'bypass' is done (the wire move from one pin of the connector to the unused one), does the lamp light during the 'bulb' check portion of the key turn sequence? How about someone who did the mod, does the 'lamp check' show the bulb filament lighting up? If so how would the 'testor' know the system is disabled? Questions, questions... So, anyone who did the 'mod' want to see if the light lights when the key is first turned during startup?