RE: RE: Trailer wiring question

From: Neil W. Bellenger (neil624b@rochester.rr.com)
Date: Thu Aug 07 2003 - 10:21:09 EDT


-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of
jon@dakota-truck.net
Sent: Thursday, August 07, 2003 12:26 AM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML: RE: Trailer wiring question

   That sounds like what is happening except that only one of the
filaments in the dual filament brake lights are being lit when I
energize the back-up lamps.

                                              -Jon-

That's pretty much what I meant. The ONLY way the "bright" filament in each
bulb should light up is by energizing the appropriate left (pin 5, dark
green/red wire) and right (pin 6, brown/red wire)
If this is a commercially constructed trailer, I would suspect the wiring
connectors. The blue, snap-closed, Scotchloc connectors may be good for dry
desert applications but I give them two years max. in our climate even if
the trailer is parked all winter.
If the trailer is home built or home wired, I would "ring out" i.e.:
continuity check every wire, end-to-end to determine where they really go
and what the resistance is. Also, the brass strips in tail light assemblies
get "funky" after a couple of years. The brass turns green and good
electrical contact gets problematic.



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