Hopkins Wiring - Trailer Connectors - HM46370 Review Video

For your #HM56200 the first thing to check is to make sure everything is grounded. 1. The connector on the vehicle should have a ground wire secured tightly to a clean surface on the frame. A wire attached to the body or a surface with undercoating…

Technically Hopkins wiring harness #HM56200 is a 4-diode system but it uses a converter box instead of separate diodes. So if you are looking at supplemental braking systems you are going to need to use the brake light relay #RM-88400 to prevent…

That is good that you already have the base plates and tow-bar for your 2021 Ford F-250 Super Duty, and the needed supplemental braking. That just leaves a few items such as the the wiring kit, I suggest the Demco 4-Diode Universal Towed Vehicle…

To determine the correct wiring for your trailer you will need to use a circuit tester, item #PTW2993, and attach the wires from the connector by function only. The light wires should be as follows, red is the stop turn wire and the black is the…

In order to verify the spindle dimensions so that you can pick out the correct hub/drum you have to get exact dimensions. For that you need to use a digital caliper like part #PTW80157. For how old your trailer is this is especially important as the…

The 84 spindle takes a 3,500 lb hub like the #84545BX which uses bearings #L68149 and #L44649. This is a 10 inch drum. The 42 spindle takes a 5,200 lb hub like part #AKHD-655-6-EZ-K and uses bearings #25580 and typically #15123. This uses 12 inch…

Since your trailer has LED taillights we don't have a converter that will work. Normally we recommend the part #C56196 but this does not work with LED bulbs. Most likely have a converter already installed on the trailer wiring if it has been used…

The closest to 4 inch round lights we have is the Optronics LED Trailer Utility Light #BUL43CB or Trailer tail Light #STL55RB which are actually 4-5/16" diameter x 1-15/16" thick. These are designed to fit the Rubber Grommet for 4"…

Your brake lights and turn signals for each side are on one circuit. The left side turn signal and brake light is generally the yellow wire going into your trailer connector. The first thing to do is check the fuses on your tow vehicle. Next, inspect…

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…

Thank you for your purchase directly from etrailer of the Redarc Tow-Pro Elite Brake Controller #RED44FR. I can only guess as to the issue but can give you a bit of direction; when you disconnect the controller from your Colorado do the brake lights…

The Curt Trailer Hitch Receiver #C13290 that fits your 2020 Mercedes-Benz GLC300 has a shipping weight of 40 lbs so minus packaging you're looking in the ballpark of 37 lbs for the hitch. Attached is an installation video of this hitch being…