[AT] Semi OT - Trailer question

[Gunnells, Bradley R]

If there is a direct short it should blow a fuse. So I'd say a frayed
wire touching the body would blow a fuse.

A so/so ground may still allow the lights to work. IF the lights were
grounding back through the brakes I would assume they could engage?

First thing I'd do, check all the connector pins on the truck with a
test light, including the ground. If they all power correctly another
possibility is in the plug of the trailer. I've had the small screws
work loose and short against the outer case. It's possible that could
short the light circuit with the brakes.

Just a few ideas to kick around.

Brad

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of John Cullom
Sent: Tuesday, April 05, 2005 11:54 AM
To: Antique tractor email discussion group
Subject: [AT] Semi OT - Trailer question

Although I do use my trailer for hauling my engines & tractor - I hauled
out 
my 16' flatbed trailer today in preparation for summer shows, & noticed 
something peculiar. All the running lights work fine, as well as the
brake 
lights, but when the lights are on, the electric brakes are engaging.
Enough 
that when I turn the lights on when pulling it, I can really feel the
brakes 
grabbing, so they are engaging all the way. Any ideas? I figured all the

grounds & other connections were clean & tight, since the lights worked.
But 
could it be a frayed wire touching the body & feeding back into the
brake 
wire? But that would blow the fuse, right? Got me stumped.
Thanks for the help,
John

PS - Should I check the grounds anyway Farmer? 


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