I'm in process of upgrading the bulbs on my Road Runner's cluster to LED's (so I can actually see them at night!) As many of you know, the polarity is key with the LED's as in they only work one way, unlike the pop in incandesant bulbs. I don't have an FSM, (yeah, I plan to by a CD) but am trying to determine with one on the printed circuit is positive, and which is negative? Does anyone have insight into this or an illustration that would help? Just an an FYI for someone cinsidering this, the Chinese LED's and "correct 5/8" sockets sold on eBay "for most 60's and 70 Mopars" do NOT fit! The LED's are fine, but the sockets are too small. Semi-related, what bulb/socket does the in dash tach use? Is there a stand alone harness for the bulb? I installed a repro tach, but not sure how to illuminate it?
As always, thank Moparts!
