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Trailer Wiring Harness Installation - 2003 Subaru Forester - Hopkins

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How to Install a Trailer Wiring Harness on a 2003 Subaru Forester


Today on our 2003 Subaru Forester we're going to install the Hopkins 4-Pole Wiring Kit, part number 33855. First we'll need to access the rear cargo area. Then we're going to open up the access to the spare tire. Alright, next on the passenger's side we're going to go ahead and remove the spare tire tools and there's a fastener here to remove this panel. This exposes us to the rear trailer connector that we're looking for. So this application is being wrapped in blue tape.

We'll go ahead and remove the blue tape exposing the connector so we can plug our new Hopkins Connector directly into it. Now we can take our Hopkins Connector that will match the manufacturers' identically, plug directly into it. Make sure you plug it in firmly enough that they lock together. Now we'll take the wire and converter box, route them over to the body cavity panel here on the passenger's side. Then we can take the other piece of our new 4-pole connector and plug directly into it.

I'll take my 4-pole connector and route it in behind the paneling with the manufacturer's leaving my excess in with the spare tire in the spare tire well. Now let's go ahead and reinstall our trim panel. Now that will complete the install of our new Hopkins 4-Pole Wiring Connector. Now we'll go ahead and show you how to use it. When you need your new 4-pole connector you simply take it out of the spare tire well, run it out across the rear cargo door threshold as the weather stripping is thick enough not to harm the wire.

However, we do recommend to stay away from the latch as pinching in the latch can damage the wire. Then we'll simply close the cargo door on the wire and you can use it with your hitch or accessory. Then once you're finished using your new 4-pole connector we'll simply reopen the door, roll up our wire and store it down in the spare tire cargo well. And that does it for the install of our Hopkins 4-Pole Wiring Kit, part number 33855 on our 2003 Subaru Forester.


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Shane H
Test Fit:
Shane H
Employee Michael B
Video by:
Michael B

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