Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(3 reviews)
Price: $64.81
In Stock
Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # HM42545
Retail:$95.69
Our Price: $64.81
You Save: 32%
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- Reviews (3)
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Hopkins Custom Fit Vehicle Wiring - HM42545
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Powered Converter
- Hopkins
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily
- Locate connection points behind tail lights
- Plug in connector - no cutting or splicing
- Run hot lead to car battery
- Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
- Powered module connects directly to battery to avoid overloading vehicle's electrical system
- Protective connection terminals resist corrosion
- Comes with dust cap for 4-way flat connector, cable ties, and terminal grease packet for electrical connections
- 90-Day limited warranty
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness. Once you've plugged in the connector, run the red hot lead up to your car battery. Connect the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
Powered Tail Light Converter
A tail light converter is built into this T-connector. This converter is a battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
42545 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector
Installation Details
This Product Fits The Following Vehicles
- 2005 - 2006 Jeep Grand Cherokee without factory tow package
California residents: click here
Customer Satisfaction Score:
86% were satisfied with this product
14% of customers were not satisfied
- Did not arrive in time
- Wrong item was ordered
Customer Reviews
Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - HM42545
Average Customer Rating: 4.3 out of 5 stars (3 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system.by: Joseph 11/05/2022
Peyton was very helpful& gracious as i was a little confused while placing the order.
She made things right just moments after we started.
Cheers!
by: Michael03/12/2022
2006 Jeep Grand Cherokee
Works great. Effortless only took a little bit getting red voltage wire ran to battery but all is good and works as it should. Now my hitch and wiring is complete thanks to etrailer.com.
by: Glenn06/11/2021
Wire wasn’t long enough going from one light to the other
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See what our Experts say about this Hopkins Custom Fit Vehicle Wiring
- Best Place To Set A Ground On A Utility TrailerYou should have no problems connecting the ground wire from your light to the main ground circuit on your utility trailer. Though we typically recommend using a Ring Terminal # DW05702-1 and a Self Tapping Screw # FA1131822 to ground it to your trailer frame as this will give you a better connection. You could also ground through the mounting studs that are in direct contact with the trailer frame or by having a jumper wire ran from the lamp to the trailer frame. If you have any further...
view full answer... - HItch For 2005 Jeep Grand Cherokee Laredo Rocky Mountain EditionThe only 2” hitch that is specifically confirmed to fit a 2005 Jeep Grand Cherokee Rocky Mountain Edition is the Draw-Tite # 75338 Max-Frame Hitch Receiver. There is also a 1-1/4” receiver (Draw-Tite # 36362 ) but it does not offer the same towing capacities, and a 2” receiver will be more rigid when using bike or cargo mounts. It is important to note that this hitch is not compatible with a factory installed rear tow hook – it will need to be permanently removed if present. I have included...
view full answer... - Trailer Wiring Harness to Fit 2019 Jeep Grand CherokeeWe have a harness that'll work on your 2019 Jeep Grand Cherokee but the Hopkins part you referenced, part # HM42545, is not a fit. It's for the previous generation Grand Cherokee on the 2005 and 2006 models. The connectors the harness plugs into behind the tail lights is not the same on the two Jeeps. Instead the harness for your 2019 is part # 118727. It's the only harness we have for the last few model years of the Grand Cherokee if they're not equipped with the tow package. I've...
view full answer... - Troubleshooting Hopkins Trailer Wiring Harness That Keeps Blowing Fuses If the Hopkins Plug-In Simple Wiring Harness # HM42545 you referenced keeps blowing fuses in the vehicle then there is likely damaged wiring somewhere that's causing a short. I recommend inspecting the wiring on the harness for any exposed, pinched, or damaged areas that need to be replaced. If it's only blowing a fuse when connected to the trailer you will want to do this with the trailer wiring, again looking for damaged or exposed sections that might be touching nearby wires or bare...
view full answer... - Trailer Wiring for a 2006 Jeep Grand Cherokee SRT8The wiring for all models of the 2006 Grand Cherokee is that same as long as you don't have the tow package. For your SRT8 I recommend the Hopkins, part # HM42545. It plugs in behind the tail lights and then there's a hot lead that needs to be ran up to the Jeep's battery. Right now we don't carry a trailer hitch receiver that's confirmed to fit the SRT8.
view full answer... - Trailer Wiring Recommendation for 2005 Jeep Grand CherokeeBasically you have it figured out pretty well already. The Curt and Tekonsha are going to be quite a bit easier to install since you don't have to route a power wire, but the Hopkins overall will be the safer and more reliable option since it has that circuit protection. If it were me and I planned on towing on a regular basis at all I would go with the part # HM42545.
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Edited by:
Lindsey S
Expert Research:
Jameson C
Installed by:
Cole B
Written by:
Alexander C
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Joseph
11/6/2023
Perfectly, without a hitch.