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Author Topic:   Trailer Wiring
13whaler posted 10-15-2010 01:44 PM ET (US)   Profile for 13whaler   Send Email to 13whaler  
I am re-wiring the trailer for my 13 ft whaler. On each side of the trailer, there is a [lamp] that is spliced into the main wiring running from the back [lamps] to the front plug. At this splice, there is a rubber coated bullet shaped connector that I am assuming is required for submersion in water. Is there a specific name for this type of connector? Where can I locate replacements?
L H G posted 10-15-2010 06:14 PM ET (US)     Profile for L H G    
At PEP BOYS, you can buy any type of trailer wiring accessories you may need, including a complete set to re-wire an entire trailer.
Chuck Tribolet posted 10-15-2010 08:38 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
And the Pep Boys stuff won't like saltwater.

I completely rewired my trailer about four years ago.
I used all Ancor 16 ga marine grade wire (most trailers have
18 ga). All the connections are solder and covered with Ancor
hot melt glue lined heat shring. There are no three-way
taps anywhere. All the wires originate from a master
connection (also soldered and heat shrunk that's tucked up
as high as possible in the winch stand. The trailer is not
used as ground, everything has a real ground wire back to
the winch stand. The only problem I have had since was a
physically damaged tail light. The boat gets dunked in
saltwater 70 days a year.


jimh posted 10-16-2010 08:57 AM ET (US)     Profile for jimh  Send Email to jimh     
The wiring to lamps on a trailer generally does not use cable-to-cable connectors, unless, for some reason, the lamp assembly is intended to be removable. I would cut out the connector and replace it with a well-made splice that was waterproof.

If you were to locate a replacement connector, it is very likely the connector would not be suitable for installation in the field onto the ends of the cable. The connector would probably come with short lengths of wire attached to it, which you would connect to your existing circuit using splices. In that case, you would then add two splices to the wiring in order to splice-in the connector. Rather than have an element of the circuit contain two splices and a connector, just eliminate the connector and replace it with one splice. Or, even better, just re-wire the trailer and eliminate all splices and connectors.

HawaiianWhaler posted 10-19-2010 10:49 AM ET (US)     Profile for HawaiianWhaler  Send Email to HawaiianWhaler     
Perhaps 13whaler is not specific enough, and he means to describe a bullet connector to the back of his side marker lights with the bullet connector's pigtail being spliced into the trailer's main wiring harness?

There is such a thing as a single pole bullet plug connector. These typically would be configured with a female bullet connector coming from the trailer main wiring harness to power trailer side marker lights where the side marker light has a male "prong" or perhaps a pigtail with a male bullet connector. Such a configuration would simplify light replacement when necessary and my trailer's side marker lights are configured that way, albeit with two pole connectors. The female bullet connector's pigtail would typically be spliced into the main harness and this splice should be made waterproof as Chuck and Jim have recommended. One example of the single pole bullet connector is Cole-Hersee No. 11171, seen on page 152 of their catalog (page 12 of the below link):

Then again, these bullet connectors could also be used in-line as part of the main harness (if that is what 13whaler is trying to describe) as they are touted as being waterproof but, in that case as Chuck and Jim have said, a simple waterproof splice would seem to be called for rather than a connector.


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