











Trailer Wiring and Bracket w/ Light Tester For 05‑10 Chevy Cobalt 2008 Sport 06‑11 HHR 08‑10 HHR SS 07‑09 Pontiac G5 Plug & Play 4‑Flat Harness
Model: 118407 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2005 - 2010 Chevrolet, Cobalt, 2 Dr.
2008 Chevrolet, Cobalt Sport, 2 Dr.
2005 - 2010 Chevrolet, Cobalt SS, 2 Dr.
2006 - 2011 Chevrolet, HHR, All Styles
2008 - 2010 Chevrolet, HHR SS, All Styles
2007 - 2009 Pontiac, G5, 2 Dr.
2007 - 2009 Pontiac, G5 GT, 2 Dr.
Wiring Kit Specs:
Part Number | 118407 |
Brand | Tekonsha |
Warranty | 1 Year |
Installation Instructions | ![]() |
Part Number | 118144 |
Fits | 4 Flat Connectors |
Brand | Tow Ready |
Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
Warranty | 1 Year |
Part Number | 20114 |
Fits | 4 Flat Connectors |
Brand | Tow Ready |
4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
Warranty | 1 Year |
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
05 06 07 08 09 10 11 2005 2006 2007 2008 2009 2010 2011
$53 75 $55.02 2% OFF
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Fits 's with the following styles:
$55.02 $53 75
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Product Details
- Brand: Tekonsha
- Model: 118407 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
Loading... |
Specification | |
Circuit Protected | No |
Hardware Included | Yes |
Harness Type | 4-Way Flat (Vehicle Side) |
Terminal Quantity | 4 |
Universal Or Specific Fit | Specific Fit |
Wire Colors | Brown, Green, Yellow, White |
Wire Quantity | 4 Wires |
Be the first to ask a question.
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2005 - 2010 Chevrolet, Cobalt, 2 Dr.
2008 Chevrolet, Cobalt Sport, 2 Dr.
2005 - 2010 Chevrolet, Cobalt SS, 2 Dr.
2006 - 2011 Chevrolet, HHR, All Styles
2008 - 2010 Chevrolet, HHR SS, All Styles
2007 - 2009 Pontiac, G5, 2 Dr.
2007 - 2009 Pontiac, G5 GT, 2 Dr.
Wiring Kit Specs:
Part Number | 118407 |
Brand | Tekonsha |
Warranty | 1 Year |
Installation Instructions | ![]() |
Part Number | 118144 |
Fits | 4 Flat Connectors |
Brand | Tow Ready |
Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
Warranty | 1 Year |
Part Number | 20114 |
Fits | 4 Flat Connectors |
Brand | Tow Ready |
4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
Warranty | 1 Year |
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
05 06 07 08 09 10 11 2005 2006 2007 2008 2009 2010 2011
Get Expert Help
Trailer Wiring and Bracket w/ Light Tester For 05-10 Chevy Cobalt 2008 Sport 06-11 HHR 08-10 HHR SS 07-09 Pontiac G5 Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-Connector Adapter
Part Numbers:
- 118407
Tools Required:
- Drill with 3/32” Drill Bit
- Philips Head Screwdriver
- Trim Panel Remover
Step-by-Step Instructions:
-
Access the Rear Cargo Area:
- Locate the vehicle wiring inside the rear cargo area by removing the wiring access panels on both sides.
- Carefully remove the foam insulation padding on each side to access the taillight connection points.
- Note: Use the top set of connection points for the T-Connector.
-
Driver’s Side Connection:
- Beginning on the driver’s side, disconnect the vehicle’s wiring connectors carefully to avoid breaking the locking tabs.
- Connect the T-Connector containing the yellow wire between the separated connectors.
- Ensure the connectors are fully inserted, and the locking tabs are secure.
-
Passenger’s Side Connection:
- Remove the cargo floor panel and the cargo tray by unscrewing the spare tire hold-down nut. Set the cargo tray aside.
- Route the T-Connector containing the green wire behind and under the trim panel along the vehicle floor near the spare tire.
- Continue routing the wire across the vehicle, behind the trim panel, and up to the wiring access area on the passenger’s side.
- Repeat Step 2 for the passenger’s side using the T-Connector containing the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the T-Connector. Do not drill into the vehicle floor or bed.
- Clean the area to remove dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
- Caution: Verify what is behind any surface before drilling to avoid vehicle damage or personal injury.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-Connector harness to prevent damage or rattling.
- Avoid areas that could pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Replace the foam insulation padding, wiring access panels, cargo tray, spare tire hold-down nut, and cargo floor panel removed during installation.
- Store the 4-flat connector in the rear cargo area when not in use.
-
Test the Installation:
- Test and verify the installation with a test light or trailer.
- Ensure all connections are complete for the T-Connector to function properly.
Specifications:
- Max. stop/turn light: 7.5 amps per side
- Max. tail lights: 7.5 amps
Safety Notes:
- Overloading circuits can cause fires. Do not exceed the lower of the vehicle manufacturer’s rating or the unit specifications.
- Refer to the vehicle owner’s manual and instruction sheet for additional guidance.
Manufacturer Notes:
- Follow all warnings and installation instructions provided.
- Store the 4-flat connector in the rear cargo area when not in use.
Installation Instructions for T-Connector Adapter
Part Numbers:
- 118407
Tools Required:
- Drill with 3/32” Drill Bit
- Philips Head Screwdriver
- Trim Panel Remover
Step-by-Step Instructions:
-
Access the Rear Cargo Area:
- Locate the vehicle wiring inside the rear cargo area by removing the wiring access panels on both sides.
- Carefully remove the foam insulation padding on each side to access the taillight connection points.
- Note: Use the top set of connection points for the T-Connector.
-
Driver’s Side Connection:
- Beginning on the driver’s side, disconnect the vehicle’s wiring connectors carefully to avoid breaking the locking tabs.
- Connect the T-Connector containing the yellow wire between the separated connectors.
- Ensure the connectors are fully inserted, and the locking tabs are secure.
-
Passenger’s Side Connection:
- Remove the cargo floor panel and the cargo tray by unscrewing the spare tire hold-down nut. Set the cargo tray aside.
- Route the T-Connector containing the green wire behind and under the trim panel along the vehicle floor near the spare tire.
- Continue routing the wire across the vehicle, behind the trim panel, and up to the wiring access area on the passenger’s side.
- Repeat Step 2 for the passenger’s side using the T-Connector containing the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the T-Connector. Do not drill into the vehicle floor or bed.
- Clean the area to remove dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire using the provided eyelet and screw.
- Caution: Verify what is behind any surface before drilling to avoid vehicle damage or personal injury.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-Connector harness to prevent damage or rattling.
- Avoid areas that could pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Replace the foam insulation padding, wiring access panels, cargo tray, spare tire hold-down nut, and cargo floor panel removed during installation.
- Store the 4-flat connector in the rear cargo area when not in use.
-
Test the Installation:
- Test and verify the installation with a test light or trailer.
- Ensure all connections are complete for the T-Connector to function properly.
Specifications:
- Max. Stop/Turn Light: 7.5 amps per side
- Max. Tail Lights: 7.5 amps
Safety Notes:
- Overloading circuits can cause fires. Do not exceed the lower of the vehicle manufacturer’s rating or the unit specifications.
- Refer to the vehicle owner’s manual and instruction sheet for additional guidance.
Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.