I took my recently acquired 1973 Overlander out for its first run of the year. My wife, 2-year-old and 8 month old couldn’t wait to be on the road. Alas, the trailer was not as excited. First problem; the 12 volt
items in trailer would not work when tow vehicle hooked up and trailer battery not hooked up. Second problem, the trailer battery was dead and would not hold a charge. I replaced the battery and a large burned out 35v fuse. The 12-volt system worked fine, but still only off the trailer battery, not off tow vehicle. Third problem; I tried to drive. Trailer would not tow. The smell of burning brakes wafted through the air. As I sat stuck at the top of a hill, two blocks from home I went through the connections. (Wife and babies walked home a bit disappointed but quite pleased not to hear my “special language.” I unplugged the harness. Trailer brakes still engaged. Kill switch, I am not even sure that was hooked up properly to begin with. Disabled. Brakes remain engaged. Last resort, unplugged trailer battery – voila. Apparently, anytime I hook up my 12v-trailer battery, my trailer brakes engage (confirmed with compass). Forth Problem, we finally got to the RV Park. Once there, I decided to check the univolt as I remember many forum members discussing these issues. I couldn’t find it. What I did find was an after market charger. Per voltmeter, when I hooked up to 120, the charge to batter went down. Thus charger not working properly. If anyone out there can help suggest fixes to these problems I would greatly appreciate it.
Issues again are: Should the 12V
system in trailer work if hooked up to tow vehicle and not trailer battery? What is the problem and fix re: trailer brakes engaged when I hook up trailer battery? Should I repair this after market charger – how, or replace it with a univolt or another after market charger? Please keep in mind I am a electrical novice.
I know nothing about solving wiring problems. Finally, can anyone refer me to a person who can do a good job with trailer wiring problems in the Monterey Bay or San Jose area of Northern California? I would appreciate any and all help. Thank you.