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Old 03-03-2011, 05:10 PM   #1
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Blue wire???

I'm trying to figure out what the blue wire is for in my 66 trade wind.It comes from the fuse panel to the inverter?
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Old 03-03-2011, 05:25 PM   #2
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I'm trying to figure out what the blue wire is for in my 66 trade wind.It comes from the fuse panel to the inverter?
That blue wire, is the "charge line".

Andy
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Old 03-03-2011, 05:44 PM   #3
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I seem to remember that wire is the one that goes to the tow vehicle.
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Old 03-05-2011, 05:34 AM   #4
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That blue wire, is the "charge line".

Andy
So..it goes to the....positive on the inverter...or neg.? It has a red(positive)&white(neg.)already hooked on the Inverter,which puts out 12v
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Old 03-05-2011, 08:39 AM   #5
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Blue should show at the connector to the tow rig. If your tow vechicle is wired for trailer 12v power this blue wire supplies power to charge your battery when t.v. is running. Some things that may be usefull just in case your electric system has been altered. The Blue wire should be noticeably larger dia. then the others, 10 or 12 gauge? Would connect to the 12v + positive. May pass through a curcit breaker befor it connects to the converter. *must have a curcit breaker in the tow vehicle*. Are you working with a converter, 110v to 12v, or an inverter, 12v to 110v? If a converter is it the original or an aftermarket upgrade. Sad fact is if the converter is original its only a matter of how long befor it needs replacement and the new 45 amps are + or - $100.00, less than a battery that the old conv will most likly ruin.
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Old 03-05-2011, 09:50 AM   #6
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This is a vintage wire diagram that might help.

It is not the current standard.
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Old 03-05-2011, 11:15 AM   #7
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So..it goes to the....positive on the inverter...or neg.? It has a red(positive)&white(neg.)already hooked on the Inverter,which puts out 12v
Your univolt is a "converter".

The charge line is always "positive".

Andy
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Old 03-06-2011, 06:26 AM   #8
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Quote:
Originally Posted by putback
Blue should show at the connector to the tow rig. If your tow vechicle is wired for trailer 12v power this blue wire supplies power to charge your battery when t.v. is running. Some things that may be usefull just in case your electric system has been altered. The Blue wire should be noticeably larger dia. then the others, 10 or 12 gauge? Would connect to the 12v + positive. May pass through a curcit breaker befor it connects to the converter. *must have a curcit breaker in the tow vehicle*. Are you working with a converter, 110v to 12v, or an inverter, 12v to 110v? If a converter is it the original or an aftermarket upgrade. Sad fact is if the converter is original its only a matter of how long befor it needs replacement and the new 45 amps are + or - $100.00, less than a battery that the old conv will most likly ruin.
110to12v.
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Old 03-06-2011, 09:28 AM   #9
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I guess we use different wire colors in Maryland. Blue has always been brakes around here. Black is the charge, white is the ground, red is left/stop, brown is right/stop, green is running lights. The yellow, it hangs out and does nothing. Dodge must be based out of Maryland too because in my current and past trucks harness, those were the exact colors in the same order too.
People love to mess with wiring. Often if a change is made, whatever color or gauge is laying around is just good enough for right now.
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Old 03-06-2011, 09:32 AM   #10
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Airstreams wire color standards, back then, were different from the RV industry standards, but were used for at least 40 years.

Andy
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Old 03-06-2011, 09:34 AM   #11
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I now understand that there really is no standard. By looking at this page you will see you can use just about any wire in any order you feel works for you. Then you can post an image of it and it becomes an official wiring diagram.

I will stick to the way my truck was wired and follow it as the standard. Bargram seems to like the way Dodge does it too.
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Old 03-06-2011, 09:55 AM   #12
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People love to mess with wiring. Often if a change is made, whatever color or gauge is laying around is just good enough for right now.
If I have to change wires, and don't have the "correct" color wire, I try to make sure red or black is powered, and white is ground. It at least gives the next guy a fighting chance...
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Old 03-06-2011, 10:07 AM   #13
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I agree on that. I have found that Fastenal has shrink wrap tubes in every color. As long as I have the right gauge, I can make it any color.
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Old 03-06-2011, 07:31 PM   #14
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I agree with above. As far as I know all modern factory elec brake systems use Blue for brakes. However, Gary is following an existing blue between panel and converter on an old trailer. On the three pre'67 airstreams I've dealt with that existing blue was 12v t.v. charge line. Granted that was only 3 of 1000s and may not be the norm, but would be a heck of a coincidence. When in doubt trace them out with a multimeter or common test light and ID them.
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