My 07 E-Glide has developed a short in where the tailight will not work,(it keeps blowing the fuse when you turn the switch on.) The high beam switch knocks out the running lights when placed in the high position only. Any suggestions on where to start,or does it (the bike) have a diagnostic plug in where it will send a code?? Finally, should this probably be looked after at the shop..I am not really good with elec. systems..Thanks