To check the right turn function: Connect the green wire to positive (+) and the red wire to ground and the right turn output function of the 5410 converter should operate. To check the left turn function: Connect the yellow wire to positive (+) and the red wire to ground and the left turn output function of the 5410 converter should operate. To check the Stop function: Connect the red wire to positive (+) and either or both the green and/or yellow wire to ground and the stop output function of the 5410 converter should operate. The Brown wire (Tail) and white wire (ground) are straight through wires.