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Old 12-02-2020, 01:34 PM   #1
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1983 31' Excella
Big Bear City , CA
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New 7 pin wiring gauge question

So I'm just about to run my new 7 pin system wiring on my 1983 31' excella resto. I plan on running a loom from the plug to a junction box and run all my wiring from there... The only problem I'm having is that I've read that I should be running 10ga wiring to my brakes but I cant find any loom with 10ga for the brakes (most run 12ga for blue). Any thoughts would be great! thanks!
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Old 12-02-2020, 02:18 PM   #2
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1976 31' Excella 500
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Just buy a piece of 10ga from Lowes/HD at the correct length and pull it through the loom. You can either leave the old one as an extra, or pull it out to avoid confusion in the future.
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Old 12-02-2020, 02:22 PM   #3
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1975 24' Argosy 24
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If you're buying a "bundle" (a loom with the seven appropriate wires), you might also consider upgrading the 12v "charge from alternator" wire so you're getting more juice to the house batteries while you're traveling. You should also increase the wire size from the alternator to the trailer plug as well as the wire in the "umbilical" from tow vehicle to trailer. None of these are critical, but your batteries will charge a little faster while you're in transit.
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Old 12-02-2020, 03:21 PM   #4
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Quote:
Originally Posted by mjameswilson View Post
So I'm just about to run my new 7 pin system wiring on my 1983 31' excella resto. I plan on running a loom from the plug to a junction box and run all my wiring from there... The only problem I'm having is that I've read that I should be running 10ga wiring to my brakes but I cant find any loom with 10ga for the brakes (most run 12ga for blue). Any thoughts would be great! thanks!
Hello Big Bear,


The Umbilical Cable I use has 1/8, 2/10, 4/12 gauge. Example: https://www.anythingtruck.com/product/595-3329.html
Mine is black, I got it from a friends shop. I am not sure you need 10ga but they are out there.

Since you are rewiring. you might also consider a HD round pin 7-wire plug and socket, https://www.anythingtruck.com/product/595-3329.html IMO, A few advantages over the flat blade style plug and socket. Sturdier, the -NEG ground makes connection first, more solid connections, seems to be more corrosion resistant, perhaps a little more security - not everyone has one.

-Dennis
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Old 12-03-2020, 07:13 AM   #5
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....The only 10g wire in most quality replacement cords is the ground & chg-power.
"Black: 10AWG 12(+)/Auxiliary; White: 10AWG Ground(-)"

POI..never had a problem with the 12g in "Cloudsplitter"

Bob
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Old 12-04-2020, 09:21 AM   #6
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1983 31' Excella
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Ah yes this is a great solution. Thanks!
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Old 12-05-2020, 08:43 AM   #7
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mjameswilson, This is the HD round 7-pin connector I was trying to show you in my last post.

https://www.anythingtruck.com/product/810-593057.html

IMO It is much better than the flat blade style.

Good luck,
-Dennis
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Old 12-05-2020, 09:34 AM   #8
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I used the 7pin round on my 72 Sovereign. It makes a better connection on my trailer plug plus not too many people have these so theft of my trailer is reduced so far. Good luck.
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