Rat vs. Wires!

[BLACK AND BLUE 67-72]

Well I had a small rat problem on my 72, went to start my truck but the battery was low, so I popped the hood to charge the battery and could barely see the engine because of all the sticks and leaves! Well I got them cleaned out and discovered that he had chewed off my Drivers side turn signal wire right at the plug that goes through the Radiator support. So now I have some wire to fix it but I do not know what color goes were in the plug, if you look at the plug it kind of makes a T shape with one end running like this --- and the other running like this I. One is light blue one is purple can somebody tell me which one goes where? I think the light blue one goes on the top of the "T" but would like to be sure before I rewire the plug. Thanks!!!