connecting multiple wires? - Fiberglass RV


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Old 12-16-2016, 07:59 PM   #1
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Name: Daniel
Trailer: UHAUL CT-13
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connecting multiple wires?

Hi all,

I am rewiring my trailer lights and was wondering what people use to connect multiple (3 or more) wires. Mine has all those blue scotch locks to tap into wires, but I heard those are not very reliable. Twist locks, butt connectors, special techniques? Thanks.
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Old 12-16-2016, 08:18 PM   #2
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I use crimp splice connectors for all 12vdc wire splices. For exterior wire splices such as brake wire splices, I use weatherproof crimp splice connectors. My 1978 Trillium 4500 has all the original crimp splices and none have failed.
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Old 12-16-2016, 08:49 PM   #3
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If you decide to use crimp connections buy good ones such as T&B or 3M . The plating on the metal crimp sleeves and the insulation is of much higher quality than the cheap Chinese connectors . Also use a genuine T&B indentor style crimper.
They cost about $30 but they perform much better than the $5 ones sold at HD. I still have my original T&B crimper from when I started the trade in the late 60's . Nothing more frustrating than trying to find a bad splice once everything is covered up.
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Old 12-16-2016, 08:58 PM   #4
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http://www.bestboatwire.com/3-way-wi...rink-16-14-awg
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Old 12-16-2016, 09:14 PM   #5
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If you can not find the weatherproof ones, fill them with dielectris grease B 4 you crimp. It will keep the nasty stuff out.

Milspec - You only crimp once. Most people will crimp one more time and that weakens the first crimp.

I prefer the ratching crimp tool as it allows you to get the best crimp.
Ratcheting Crimping Tool
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Old 12-16-2016, 09:25 PM   #6
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I strip away part of the insulation to splice into a wire, then solder, and wrap with electrical tape. If terminating several wires to the battery, first go through a fuse block, then only one fused wire goes to the battery.
For the multiple negative/ground wires I go to a buss block, then one wire to the battery.
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Old 12-16-2016, 10:10 PM   #7
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Old 12-17-2016, 07:30 AM   #8
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Depending on the wire size, these can accommodate 3 or 4 wires. Not weatherproof though.

To weatherproof a regular crimp connector, I slide a length of heat shrink over them, fill the ends with sealant like silicone, apply heat, the sealant will ooze out the ends and seal the connection.
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Old 12-17-2016, 09:15 AM   #9
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Quote:
Originally Posted by David B. View Post
I strip away part of the insulation to splice into a wire, then solder, and wrap with electrical tape. If terminating several wires to the battery, first go through a fuse block, then only one fused wire goes to the battery.
For the multiple negative/ground wires I go to a buss block, then one wire to the battery.
Dave & Paula
Some years ago, I used to work on radio, siren, and electrical systems in police cars and fire trucks. When they came into the shop with a problem, the majority of times it was a bad crimp. On my Casita, I go the solder route. The best electrical tape is the stuff that you stretch and then it fuses together in a watertight bond.
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Old 12-17-2016, 10:54 AM   #10
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Solder is the best. Then a good quality electrical tape.
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Old 12-17-2016, 11:58 AM   #11
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I don't use electrical tape if I have to and I only use 3M, if you want a water tight and strong connection the best is to solder the wires and use quality shrink tubeing. If you want high quality terminal connectors buy them from a heavy truck or equipment parts supplier generally they only handle the best.
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Old 12-17-2016, 02:08 PM   #12
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I really like these little connectors. They make them for joining 2 wires, and up to several wires which can be "ganged" together. The nice thing about these is they clamp the wire, they don't cut into the wire like Scotch-Locks do.

https://www.amazon.com/Wago-222-412-.../dp/B003K0J4IQ
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Old 12-17-2016, 02:14 PM   #13
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solder

I solder and use heat shrink tubing when possible. If using electrical tape, don't stretch the last wrap.
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Old 12-17-2016, 02:44 PM   #14
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mary and bob
I retentively purchased a box like yours at a low price from Walmart on line site.

There were quite allot of excellent posts on this subject. You cant go wrong following the advice on these posts.
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