chadwick7cohen
20.06.2021 4:31:49
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On your trailer, it’s usually pretty simple to determine the type. Count the number of terminals on your plug. If you have 4 connectors, it’s a pretty safe bet you have domestic type wiring. If you have 5 (or more), you are probably import. The extra wire could be anything from an interior light to brakes (usually only on a camper). [links]
‘Import Lighting’
Aka 5 (or more) wire.
This is where your turn signals and brake lights are different wire and bulbs. here
Let’s start here; trailer wiring can be confusing. Nothing is the same except you tow the trailer. Let’s talk about the differences in the 2 lighting types.
HEY! This is really important. There is no ‘industry standard’ for trailer wiring in the Powersports Industry. Be sure you compare wire function and not just wire color.
‘Domestic Lighting’
Aka 4 wire.
This is where your turn signals and brake lights are combined on the same wire and bulb. more
If you look at the picture above, you can see the light on the left has no separate turn signal as compared to the other light. As styling evolves (especially with the use of LEDs), it might be harder to visually determine if your tow vehicle is an import or domestic type.
Yellow - Left Turn (& brake on a 4 wire system)
Blue (or Red) - Brake Lights (only used on 5 wire systems)
As you can see, both of these trailers only have 2 function lights in the rear that will work as both your brake lights and your corresponding turn signal indicator lights. While this is perfectly legal, it minimizes the functions of the lights and decreases safety. For example, when you apply the brakes with the left turn signal on, the left light will flash while the right side light will stay lit indicating braking. You only have 1 brake light, 1 turn light, and no remaining running lights. This type of trailer is like shooting for a D on a test just to pass the class, as it only meets the bear minimum requirements for trailer lighting. more
Digital thermostats normally require a power source unless they have a battery backup. For the same type of systems, here is a breakdown for the type of HVAC systems they control:
You already have the 24 volt hot with the red wire, so now you need to either find another wire in that bundle or run all new thermostat wire so you will have the proper amount of wires for the job.
These were the older mercury switch thermostats that were mechanical. Mechanical versus newer thermostats that are digital. Some systems still have the older mechanical thermostats, which are typically 4-wire thermostats that control the same type of system described above.
I can only assume it is unused for anything, at least this jumper you are talking about here. On your new thermostat, you will not have to worry about this. Just follow the instructions that come with the new thermostat. That’s good news. And now, the not-so-good news. You did not mention if you had any additional wires there in the thermostat bundle because, with your new thermostat, you are going to need one extra wire.
The first thing we need to do is to identify the wires and where they go using our comprehensive guide to thermostat wire colors and codes. [links]
4 Wire or 5 Wire Thermostat Wiring Problem - Question: We have a 19-year-old condo with an old Carrier mercury thermostat. We have both a natural gas furnace and an AC unit. There are only four wires going into the existing thermostat - red, green, blue, white. On the back of the thermostat are a number of labeled contacts, only the following have wires connecting them:
W - white wire
Y - blue wire
R - red wire
G - green wire
Y wire jumpered to a contact labeled 1
The 5 wire plugs are usually for trailers w/ surge disc brakes. The 5th wire goes to the reverse lockout solenoid that keeps the disc brakes from engaging when backing up, when the tow vehicle is pushing on the surge brake master cylinder. Disc brakes will apply equally well in forward and reverse, as drums are not applied (usually) in reverse. That 5th wire is usually wired to the tow vehicles backup lights.
Re: 4 prong 5 wire plug end? Does it still exist?
i would think you can wire a 4 in. as two wires are the tailights. can be hooked togather. yellow and green i think are the stop. the brown ate both tail im i find myself correct. are hooked togather.
Re: 4 prong 5 wire plug end? Does it still exist?