Hey Wildgoody. Thanks for the reply. That makes sense for the wires except for the blue one. You say that it would most likely be for power, but power for what? I was out in the garage this morning comparing the Tracker relay pack that I am wondering about to one of my "flat four" harnesses, and it makes sense now, except for the blue wire. I could most likely just "dead head" it, and leave it alone, I guess....

Ya, I'm not sure why there would be a power wire there either, but
it could be used for charging a battery like in a small camper trailer or
any other need, just check and see if it's powered, it might be to power
the lights and the other small wires ground them to turn the bulb on

Wild

the converter for the taillights needs to be powered. (i tested mine a while back and everything works till you turn on the taillights and hit the brakes, it cancels out the turn signal. theres 2 types of converters, powered and non powered. blue wire im suspecting is acc power. if i have time over the next week ill try and rip back into mine and start probing, im still running a non powered converter on mine, i just learn to not stay on the brakes when i want to make a lane change...

You are right on Mike, the blue is the acc power on the trailer side of the plug.  Probably won't need it with the teeny tiny trailer that our trackers 96 ponies and little brakes can handle.

i had a 4x8 on the back of my kick over the last weekend and it made my tails start flashing. (taillights on truck and trailer flash like i turned the hazards on) front lights dont, dash lights dont.

also had a uhaul car hauler on the back to pull out to pick up a family members dead car (unloaded weight was 2000lbs) dont worry, it was only towing the unloaded trailer, once it got there the larger truck took over. both trailers did the same with my truck.

i got a lot of weird looks with both trailers, no one knows how well these little buggers can tow. i was passing people on the highway with that car hauler.

So, the BLUE wire could be used for , say, an Elec. brake on the trailer then? Thanks for the help with the rest of the wires, gang!

Could, but traditionally blue goes to something like a batt charger that would have power coming from the tow rig all the time instead of just when you hit the brakes,  that way when you unhook the travel trailer the batts that run the lights inside and such have fully charged batts.  If you do a google search on trailer wiring diagram it will clear it up for you.  Your tracker will most likely not tow something heavy enough that it will need brakes, so if you wire up just the basic lights set up you'll probably have what you need.  Our trackers are so light that they do not have the oats, stopping power, or sheer mass to make great tow rigs for much over a 1000lbs unless you live in the flats and don't experience wind and the like.  Here is a basic light wiring diagram that should work between yours and any buddies rigs if everyone wires things as standard. 

 http://www.accessconnect.com/trailer_wiring_diagram.htm

Thanks, Medford! That diagram is very helpful.
 Oh, and I know that the little 'zuki ain't stout enough to warrant a trailer with Ebrakes, it was just a random thought.... Aux. power, huh.......hmmm.........