Trailer Light Converter PUBLIC

Not provided.

This combines "3 wire" trailer wiring from separate brake and left/right turn signal wires to "2 wire" where brakes are on the same wire as left or right turn signal. The diodes may or may not be necessary but I couldn't get CircuitLab to do calculations without them.

If brakes are pressed then flashing sequence is inverted so that the activated brake light is suppressed (resulting in a flashing sequence). When brakes are not activated, the normal left/right +12v signals are passed through directly.

The various possible states are:

BRAKE/LEFT/RIGHT signal = left-right light output

[ ABSENT BRAKING, PASS THROUGH LEFT/RIGHT FLASH SIGNAL ]

open/open/open = off-off (no signal/brake lights)

open/closed/open = on-off (left turn light flash on)

open/open/closed = off-on (right turn light flash on)

[ WHILE BRAKING, LEFT OR RIGHT SIGNAL ON WILL SUPPRESS THAT LIGHT ]

closed/open/open = on-on (brake lights ON)

closed/closed/open = off-on (left blinks OFF)

closed/open/closed = on-off (right blinks OFF )

[ HAZARD/WARNING LIGHTS WITH BRAKES ]

closed/closed/closed = off-off (both lights OFF)

closed/open/open = on-on (both lights ON)

[ HAZARD/WARNING LIGHTS WITHOUT BRAKES ]

open/closed/closed = on-on (both lights ON)

open/open/open = on-on (both lights OFF)