Heres what i found..
I added led headlights....because there was no park lights within the leds, i just tucked the wire in the back....
No taillight!!!!...blown fuse...replaced the fuse..poof!...blown fuse!
Traced it to the 'spade' fittings for the park lights in the headlights that i had tucked away. The 'spade' fittings were shorting out on themselves cos they are so close,so i added the bulbs and fixed it.
You could just cut the 'spade' fittings off and tape the wires up and tuck them away..