What is the function of the 8 wires for the factory rv plug?

limited info generic their are at least 5 or 6 different models--chassis's-- and same for length/ sizes ----can check with rv shop dealers --online search include make and model --and their are multi rv forums that have help and manual sections

double posted but missing this Cat 3126

this post is impossible to answer lacks all key facts
a motor home class A"????????? you said pusher i
or did you mean a BUS (school or otherwise)

1: is engine and coach all factory stock and origional
2; what causes this wire missing thing.? the $64,000 question.

BUS/ MotOR home brand not told
engine size not told

I guess he charging wires to RV chassis deep dishcharger batteries are missing and the DIODE block too??
altenator out does that on the alternator big red wire 6gauge up.
ALT>>>> OUT?>>>(ANODE END) DIODE BLOCKER.>>> RV BATTERY BANK.
THE DIODE BLOCK KEEPS DIESEL STARTER FOR KILLING DEAD THE RV BANK.
ON SOME RV (BETTER) WE HAVE HUGE 100AMPS SWITCH THAT SHORTS THE DIODE BLOCK TO ALLOW EMERGANCY CRANKING
OR IN LEU OF BATTERY BLOCK A SMART CONTROLLER.

not TOLD does the rig run at all on the road now ,safely
if yes any RV center to do this.

Here is a previous answer to that question.

https://www.fixya.com/cars/t25730347-drain_plug_2011_dodge_avenger_radiator

Contact some RV dealers in your area or state, or go online and type in RV dealers for the nearest dealer or the location of the Georgie Boy factory.
God bless your efforts.

Are you referring to the trucks wiring harness? I hope you purchased an integration harness. Your truck has a databus system and an integration harness is needed to maintain certain functions including door chimes, warning chimes, on star (if equupped) etc.
also the factory radio does not have a switched power lead to turn the radio power on with the key. That is also handled via databus.

IF the factory plug uses the standard wiring code, then yes, it should be hooked to the backup lights.

You can check with a simple 12 volt test light you can buy at pretty much any auto parts store if you don't have one.

1st you NEED to make sure the tires are chocked and the vehicle is on a level surface before proceeding.

After securing vehicle so it doesn't roll;

Turn the ignition switch to the "on" position. Do NOT start the engine.

Place the shifter in the "reverse" position.

Go to rear of vehicle to confirm the backup lights are lit up.

Using the test light, touch the probe to the center post of the trailer receptacle AFTER you make sure you have a good ground for the alligator clip of the test light.

IF the test light shows power, then the receptacle is wired properly.

To confirm that the center post IS the backup circuit, place the shifter into "park" while leaving the key in the "on" position and retest with the test light. If the circuit doesn't have power then it's pretty much a done deal the receptacle is wired correctly.

Hope this helps.

7-Way RV Trailer Connector Wiring Diagram
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Question:
trailer connector wireing diagram. need to know which color wire go to which post.
asked by: Joann

Expert Reply:
When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it.

If you are looking at the inside of the trailer connector where the wires mount to the terminals starting at the notch at the top and working clockwise:

1:00 is Black and 12 volt power
3:00 is Green and Right Turn and Brake
5:00 is Blue and Brake Controller
7:00 is White and Ground
9:00 is Yellow and Left Turn and Brake
11:00 is Brown and Tail and Running Lights
Center is Purple and is Optional Reverse

I recommend using a circuit tester like part # 40376 to verify your connections.

You have something Mis-Wired.... AUX is for the BATTERY CHARGING. You may have a GROUND ISSUE ALSO

You probably don't have one and need to have it installed. Not all trucks came with a trailer tow package.

With 4 prong and 3 extra, that will give you what you need for 7 prong for towing RV. If your not too experienced in that area, a mechanic at any trailer place, or hitch installation place or who knows RV wiring, should be able to do it for you in about 1/2 hr. or less. Testing the wires from your truck for what they do as in right , left, stop, running/taillights, etc is about the hardest part, and the 7 prong usually comes with what terminal does what.