Having trouble with my right blinker
Hi, I have been trying to figure out why the right blinker doesn't work on my Mallard. The left blinker does, as do the running lights. Changed the bulb, nothing. Cleaned the connector, nothing. Ch...
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TTMA color code is different than the R.V. nightmare color code and many mechanics throw up their hands in disgust and follow TTMA guidelines (Truck Trailer Manufacturing Association). This is what MAY have happened in your case.
For years and years the entire automotive industry followed the BROWN tail and parking lamps, YELLOW, left turn, GREEN right turn custom.
To complete the TTMA guidelines, RED is specified for brake lights, BLUE for accessory, BLACK for marker lights and WHITE for chassis ground.
If I know which wire is CHASSIS GROUND, sometimes I break a light bulb stick it in the malfunctioning socket hook a jumper wire to one of the two filament pins, then run forward and see if the power appears at the trailer PLUG (not the disconnected truck SOCKET).
Electricians joke that RV color codes were established when manufacturers stumbled across the cheapest wire sources regardless of color.
For years and years the entire automotive industry followed the BROWN tail and parking lamps, YELLOW, left turn, GREEN right turn custom.
To complete the TTMA guidelines, RED is specified for brake lights, BLUE for accessory, BLACK for marker lights and WHITE for chassis ground.
If I know which wire is CHASSIS GROUND, sometimes I break a light bulb stick it in the malfunctioning socket hook a jumper wire to one of the two filament pins, then run forward and see if the power appears at the trailer PLUG (not the disconnected truck SOCKET).
Electricians joke that RV color codes were established when manufacturers stumbled across the cheapest wire sources regardless of color.
