How to install warning lights

1, to install this Beacon Warning Light car faithful reminder: warning light is divided into positive and negative, positive connection port 58, the negative pole screws, otherwise it will not blink
2, when opening T73-A must be careful, because the space is small.
3, the normal wiring methods, wiring, a termination screws, one end of the broken wire to 58 ports, broken lines cross wiring again before flashing normally.