This is a video of a mod I made for my 2004 Mazda 6. These cars come from the factory with a 1157a bulb installed for the front turn signals. These are dual filament bulbs. From the factory, the "dim" filament is not used. My mod utilizes this filament and wires it into the running light circuit, which is how 1157 and most all dual filament bulbs are generally wired. The full write up of how to do this mod is posted at 6crew.com and mazda6club.com. Here are the links: www.6crew.com forum.mazda6club.com I had a request from a poster at 6crew.com for a video of how my mod works. So here ya go. Hopefully this answers the questions on whether the turn signals still work properly after the mod.
Mazda, turn, signal