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Standard SEVEN WAY plug wiring diagram

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Old 03-16-2007, 07:31 PM
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Standard SEVEN WAY plug wiring diagram

Since there are so many questions on it, I'm posting this as a quick reference.

The trailer side is the reverse of what you see below, but if you remember DRIVER SIDE/CURB SIDE it can be followed easily
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Old 03-16-2007, 09:22 PM
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thanks.... I'm about to get a trailer with a 7 prog connector and will need to "convert" my flat 4.
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Old 03-16-2007, 10:21 PM
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You'll have to add some wires, but it isn't too hard to figure.
I posted about that very thing here.
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Old 03-20-2007, 07:05 AM
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Greywolf,

well, I got my '69 15ft Prowler home yesterday afternoon. we had to rig lights on it. someone (looks like years ago) cut off the trailer connector... we tried wiring our 4 prong to the loose ended wires, by matching color wires, but could never get things to work. no, we didn't look at the condition of the trailer wires, it was easier to just use the light set we took.

I guess it's too much to ask if all trailers and connectors are consistent about wire color usage, huh?

thanks
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Old 03-20-2007, 08:54 PM
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The wire colors are SUPPOSED TO BE (remember that- "You will see this material again") standardised. But case in point - end of the day today I had to stay late and sort out a mess that a PROFESSIONAL HITCH INSTALLER (in the memphis area. Gosh! Who could that be...) made of a bundle of wires on a class A diesel.

Left and right turn were reversed (yellow vice green), and the connector installed was totally corroded due to lack of any kind of crud preventive compound on it.

(GOT NEWS: Petroleum jelly works real good to keep electrical connectors clean)

RVIA set the standard colors years ago.
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Old 05-20-2007, 01:23 AM
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For the most part what is the standard for wire colors. I know that yellow is left, green is right, brown is running/marker lights, red is usually 12v power. But what about the blue, white, orange, black. I've noticed differences in these colors between manufacturers. Is their a standard? If so what is it??
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Old 05-20-2007, 01:34 AM
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Quote:
Originally Posted by avator
Greywolf,

well, I got my '69 15ft Prowler home yesterday afternoon. we had to rig lights on it. someone (looks like years ago) cut off the trailer connector... we tried wiring our 4 prong to the loose ended wires, by matching color wires, but could never get things to work. no, we didn't look at the condition of the trailer wires, it was easier to just use the light set we took.

I guess it's too much to ask if all trailers and connectors are consistent about wire color usage, huh?

thanks
Problem is it took manufactures years to abide by the standardized colors, Ford & GM have only recently went to the standard colors. I just got into the habit of always testing the function of each wire, ended up saving more time in the end. And with your trailer being a 1969 model God only now what colors they were using.

Good luck
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Old 05-21-2007, 03:14 PM
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Been a while since I've had to do any rewiring; but if memory serves me right, the standard colors for a 4 pin aplication are different from a 7 pin aplication. To throw in another twist, a couple of times I've seen people swap the 12 volt positive pin with the trailer brake pin on both ends to make their trailer harder to steal - plug it into a standard connector and it locks up the brakes. Had to snip the brake wire on my 20' 5er flatbed to be able to get it home to rewire it the standard way when I bought it.
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Old 05-21-2007, 08:33 PM
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It gets even more fun. In DC circuits, black is usually ground, yeah?
In Japanese cars ground is usually green.
In houses, ground is green, white is phase, and black is neutral.
In RV's, black is HOT. WHITE is GROUND...

The trailer wire code I will look up tomorrow, and you will all scratch your heads and wonder Y-in-L they did that!


~Wolf
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Last edited by Greywolf; 05-21-2007 at 08:36 PM.
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Old 05-21-2007, 08:51 PM
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Quote:
Originally Posted by Greywolf
In houses, ground is green, white is phase, and black is neutral.~Wolf
Nope,

In 120/240V home/business wiring:
Ground = Green or Bare
White = Neutral
Black = Line/Load

Hope this clears up any confusion
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Old 05-21-2007, 08:57 PM
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I've been confused ever since I got near these dang things....

That's why I always use a reference chart and a test light or meter!
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Old 05-21-2007, 09:06 PM
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Quote:
Originally Posted by Greywolf
I've been confused ever since I got near these dang things....

That's why I always use a reference chart and a test light or meter!
Yep i feel your pain, DC, Automobiles and electronics are different than 120/240V AC systems in color and configurations.

As you say best plan is to use a test light and meter before touching with your bare hands or hooking something up.

When i switch between DC & AC i always have to think about what i am working on as the colors are different.
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Old 05-21-2007, 09:10 PM
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I had a BLAST today....

CENTER DRIVERS GUAGE PANEL replacement, in a Holiday Rambler Embassador...

I was looking at hanging wires and couplers at the end of it all (completely installed, and checked twice) and realised there were about nine options with knock-out sections on the panel, not used...

I still had to fix a loose turn signal indicator.

But no parts or screws left over, which is exceptional on a dash panel swap!
(I could list out everything in it, by why waste the night? BOOST, AIR PSI, LIGHTING, TACH, etc...)

The funniest part of it was when I had BOTH panels spread out around me, guages being replaced, and my new service manager wanted to know if I "Knew how to do a check in for a new unit?"....

I said: "You REALLY want me to drop ALL OF THIS to go do that?"

She went away....

I could give a flying flip, I waited three weeks for that panel so I could finish it.
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Last edited by Greywolf; 05-21-2007 at 09:20 PM.
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Old 05-22-2007, 07:12 AM
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...and SHE got that job because of WHAT experiance???
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Old 05-22-2007, 08:06 PM
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She got it because she worked in the same office as the manager who LEFT - and thus knew something about what was going on.

If they don't drive her out of her mind, I think she'll do a great job.
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Old 05-22-2007, 08:06 PM
 
 
 
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