Is the Bus Bar the Common Power Point on the Pollak 7-Circuit-Breaker Junction Box  

The dimensions on the Pollak 7-Circuit-Breaker Junction Box, part #PK52249, are as follows, With the mounting holes on the left and the right the length (right to left) from one edge of the mounting hole tab to edge of the other mounting hole tab…

Given that trailer wiring only consists of basic light functions, 12 volt power, and brake output a system of fuses is not necessary because it is easy to determine if something is not working. If there was a short, the way you would know with or…

Yes you would want to run a ground from the junction box to the frame of the trailer so that all of the trailer wiring circuits are properly grounded when installing the junction box #PK52249.

The black wire of the Hopkins 7-Way Molded Trailer Wire Connector #HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailer's battery. I attached a help article that…

Thank you for providing a thorough description of the truck and trailer lighting issues you're having. The various problems you describe COULD be related to the same issue, corrosion in the trailer connectors, but there may also be multiple…

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…