Rewiring lights on 74 Ambassador
Greetings GoodRed Road!
Originally Posted by GoodRed Road
Where do I wire the Tow Vehicle 12V+ wire to in the coach?
A definitive answer to your question is difficult as it is impossible to account for the variables that may have been created by previous owners of your Airstream. The wiring pattern for the seven-pole Bargman connector in 1974 was not the same as the standardized wiring pattern that is utilized on modern tow vehicles. I have attached a pdf file containing the wiring diagram utilized by Airstream for the Bargman connector from 1966-1981. Even this may not be totally accurate as a prior owner of your trailer may have wired in a new umbilical cord with a different color coding scheme. The diagram will at least give you a starting point to troubleshoot the wiring on your trailer's connector.
Good luck with your investigation!
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)