Rear turn signals for 2006 TE 250

Hi am a new TE 250 owner. i am trying to figure out which wire is positive for the 2006 250. There is a blue and a sky blue wire. Any one know which one is positve. I had tried to test with a multimeter but did something wrong and smoked the fuse. Original owner cut off quick connect. I have purchased the sacass flat mount leds. I am mounting them on the fender. I alsodont know which wire I should connect the positive line to on the led. They are black and red. Any info greatly appreciated.

Blue / Sky blue is left

Black and red is Right

Get your multimeter out again and make sure red lead is plugged into + and black lead is into -. Set range to DC and closest range to 12V. Place red lead to one of signal light wires and black to other and turn on signal light switch. Multimeter should pulse up if polarity correct or down if reversed. Fiddle with leads until wire on red lead pulses up. This will be your + wire for led.