i figured it out. the yellow wire is/was for the fan, along with the bottom switch on the headlight. hooked the wires back up now that switch turns on my led. will probably go without a fan until something happens to make me think i need one.
rode around town some today. definitely getting turn signals, was all i could do to find neutral and not die, arm signals was an added element i could do without.
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 09 TTR125, 07 TTR90, 07 CRF50