try connecting a positive wire to a positive socket connection for he tail
your problem is likely a bad plug assembly, a direct connection from the ba
ttery positive should brighten things.....
in fact the one connection will likely brighten all lights
trailer plugs are cheap, you could make up a test plug with light bulbs, an
d plug it into the tow vehicle......
or make up a test tow vehicle end connection to power the trailer, add a sw
itch or two to duplicate brake lights etc
but i would still suggest rewiring the total trailer, you will find trouble
s, corroded contacts, poor connections, and in the case of one trailer i wo
rked on the main traler wire insulation was badly worn, in a hidden area it
would of shorted and taken out all trailer lights..... found when pulling
if you rewire go at least one size heavier......
if the wire is 16 gauge, go to 14 gauge, it will be stiffer, but work bette
r...... of course use straded
the last trailer i worked on, the trailers plug assembly connected inside a
small metal box on the frame. taking the cover off revealed its backside w
as rotted out, allowing water coirrosion of the connections....'the damage
wasdnt visible from the outside
you should seal all crimps with blobs of silicone caulk all around every co
nnection so water cant get at them....
Thanks for the suggestions. The most that will happen this week will be a
possible test with an external 12 V source, or perhaps a different tow
vehicle if I can get someone with a flat four connector to stop over. That
would at least eliminate my tow vehicle as the issue.
The trip to my daughter's college is on Wednesday and as long as everything
is working at this point, I'm not messing with any wiring on the trailer or
tow vehicle so soon before the trip.
On Mon, 19 Aug 2013 13:31:30 +0000 (UTC), DerbyDad03
One thing that you need to remember when testing trailer lights.
If the lights go "wonky" when you use the signals you have a bad
ground - period. Signals on, tail lights off, and side markers glowing
with the signal? Bad ground. Period. Bad TRAILER ground - not bad lamp
ground, most likely - and if it is a bad lamp ground it will be on the
lamp that causes the interaction.. If the signal can't get a good
ground it will back feed through the tail lamp filament, which will
eventually find a ground through the tail lights of the tow vehicle -
making the low wattage side markers glow.
If there is no interaction between signals and other lamps you can be
99.999% sure it is NOT a ground problem. If there is interaction,
99.9999% sure it is.
The LED lens is still a viable option. I didn't have time to get a set via
mail order nor call the "trailer stores" in my area, mainly because they
are not that close to me. I've been too busy working, getting ready to move
my daughter and testing the trailer wiring to drive to one of the 2 places
that might carry the replacement lens. I didn't even bother to call because
I knew I wouldn't have time to go buy them. I'll call when I get back.
I did check 2 local auto stores but all they carried was the 1157 LED
bulbs, which didn't work out so well.
BTW...my daughter's move went fine. She's in her apartment and I'm taking
the long way home, stopping to visit some old friends for a day or two.
I'll update the LED lens situation after I get a set to try.
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