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</head><body><p><span style="color: #333333; font-family: helvetica,arial,sans-serif; font-size: 12pt; background-color: #ffffff;">Coming back to the "well of Triumph knowledge" once again...</span></p><p><br></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;">My current (no pun intended) project is to switch over my exterior lighting from the ancient incandescent bulbs to <em>ultra modern Gen-X approved</em> LEDs. Simple job eh? Just replace the bulbs, put a ballast resistor in the left and right turn signal circuits and pop in an electronic flasher to replace the bi-metal one the car came with.</span><br></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;"><br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;">Well, let me attest that nothing, <em>absolutely nothing</em>, is simple on my TR6! OK, I tried to test the new system today and only one of the back-up lamps work. Quick trip to my FLAPS as its finally time I get a multimeter of my own - so I bought a really good Bosch one that has a diode test position among the many tests it is capable of performing. Actually, it is really the same thing as a continuity test, but it looks cool as heck on the unit. Anyway, I touch the red lead to one of the bumps on the bottom of the bulb, and the black one to the side of the base and nada! </span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;"><br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;">I also bought 2 new white LEDs for my backup lamps as they were about 3/4 the price as Moss asks. This is really interesting: the first time I tried the test on them, there was a faint "click" from the bulb, then nothing. No light-up, no reaction from my multimeter, nothing. If I reversed the red and black probes, another faint click then nothing. Is there some polarity thing going on in the bulb? As I said, only 1 of the backup lights works. <br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;"><br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;">Is it possible that I got a bunch of duds? For what they cost, I certainly hope not! Is there some other thing I need to do? Help! We've finally got a couple of summer days here in Maine, and I don't want to waste them chasing this problem on my own.<br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;"><br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;">Thanks... Tom Walling <br></span></p><p><span style="font-family: helvetica,arial,sans-serif; font-size: 12pt;"><br></span></p></body></html>