Look at the very last page of the service manual. Tail light is #67, rear signals are #61 and #62.
It looks like the triangular plug is for your tail light. It should match one in your bike, with yellow, black, and blue with red striped wires going into it.
The single blue and yellow wires are for the turn signals. Looks like your bike has rounded 3 pin connectors with two wires going into them: black and dark green on one side, black and "chocolate" on the other side. You'll have to see which is for which side. Try blue going to chocolate and yellow to dark green. If the signals are blinking on the wrong side, switch blue to dark green and yellow to chocolate.