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/BUCCaneer,
I have several friends who I have built a P.C. board full of LEDS. Get the brightest ones you can find & run a strip of 4 or 5 leds in a row, Then start another row till you get to the board full. Have the common run down the middle & have 5 on the left & 5 on the right & many rows down. The feed required two diodes to block the other circuit & a resistor to control how bright the tail lights are & the other "brake" feed has no resistance. The diodes blocked the other voltages. I used one LED for both functions, bright & brighter. I built the board under a magnified lens to have everyone tight against the board & polarity lined up. It worked out well. We potted the board in clear potting stuff so everyone was sealed away from water & the road crud. We epoxied brackets to mount on the frame. If a Harley won’t break them at 90 MPH nothing will!! E mail me for more data please. Be careful of the LED’s angle of view, Some are parabolic to the extreme & others have a wide view that don’t get back as far. One problem we did find out early that the hot rodders that wound up the motors we would over volt the LEDS & smoke them. We added a zener diode to block any voltage over 14 volts when the genny was singing. Any questions send me an e mail @ jeff.50@cox.net.
Jeff