











Trailer Wiring and Bracket and Light Tester For 73‑84 Chevy Blazer Suburban GMC Jimmy C/K Pickup 4‑Flat Harness Plug Play
Model: 118311 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
This Hitch Fits The Following Vehicles:
1973 - 1974 Chevrolet, Blazer, Full Size
1975 - 1984 Chevrolet, Blazer K5, Full Size
1973 - 1984 Chevrolet, C/K 10, All Styles
1973 - 1984 Chevrolet, C/K 20, All Styles
1973 - 1984 Chevrolet, C/K 30, All Styles
1973 - 1984 Chevrolet, Suburban C10, All Styles
1973 - 1984 Chevrolet, Suburban C20, All Styles
1973 - 1984 Chevrolet, Suburban K10, All Styles
1973 - 1984 Chevrolet, Suburban K20, All Styles
1973 - 1984 GMC, C15/C1500, All Styles
1967 - 1984 GMC, C25/C2500, All Styles
1973 - 1984 GMC, C35/C3500, All Styles
1967 - 1984 GMC, K15/K1500, All Styles
1973 - 1984 GMC, K25/K2500, All Styles
1967 - 1984 GMC, K35/K3500, All Styles
1973 - 1984 GMC, Jimmy, Full Size
1973 - 1984 GMC, Suburban C15/C1500, All Styles
1975 - 1984 GMC, Suburban C25/C2500, All Styles
1973 - 1984 GMC, Suburban K15/K1500, All Styles
1973 - 1984 GMC, Suburban K25/K2500, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118311 |
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 |
Questions or Comments? Call 702-374-8999
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:
73 74 75 76 77 78 79 80 81 82 83 84 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
$43 54 $48.77 11% OFF
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Fits 's with the following styles:
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Fits 's with the following styles:
$48.77 $43 54
Questions? Call our Auto Experts at (877) 869-6690
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Product Details
- Brand: Tekonsha
- Model: 118311 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
Loading... |
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
This Hitch Fits The Following Vehicles:
1973 - 1974 Chevrolet, Blazer, Full Size
1975 - 1984 Chevrolet, Blazer K5, Full Size
1973 - 1984 Chevrolet, C/K 10, All Styles
1973 - 1984 Chevrolet, C/K 20, All Styles
1973 - 1984 Chevrolet, C/K 30, All Styles
1973 - 1984 Chevrolet, Suburban C10, All Styles
1973 - 1984 Chevrolet, Suburban C20, All Styles
1973 - 1984 Chevrolet, Suburban K10, All Styles
1973 - 1984 Chevrolet, Suburban K20, All Styles
1973 - 1984 GMC, C15/C1500, All Styles
1967 - 1984 GMC, C25/C2500, All Styles
1973 - 1984 GMC, C35/C3500, All Styles
1967 - 1984 GMC, K15/K1500, All Styles
1973 - 1984 GMC, K25/K2500, All Styles
1967 - 1984 GMC, K35/K3500, All Styles
1973 - 1984 GMC, Jimmy, Full Size
1973 - 1984 GMC, Suburban C15/C1500, All Styles
1975 - 1984 GMC, Suburban C25/C2500, All Styles
1973 - 1984 GMC, Suburban K15/K1500, All Styles
1973 - 1984 GMC, Suburban K25/K2500, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118311 |
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 |
Questions or Comments? Call 702-374-8999
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:
73 74 75 76 77 78 79 80 81 82 83 84 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
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 |
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Trailer Wiring and Bracket and Light Tester For 73-84 Chevy Blazer Suburban GMC Jimmy C/K Pickup 4-Flat Harness Plug Play Install Notes
Installation Instructions for T-One® T-Connector
Part Numbers:
- 118311
Tools Required:
- Drill (3/32” Drill Bit)
- Screwdriver
- Test Probe
- Electrical Tape or Tie Straps (not supplied)
Step-by-Step Instructions:
-
Locate the Vehicle’s Tail Light Wiring Harness:
- Find the wiring harness along the inside of the left rear frame rail.
- This harness will have a connection point with connectors matching the ends of the T-Connector.
-
Disconnect the Wiring Harness:
- Carefully separate the harness connectors, ensuring not to break the locking tabs.
- Check and clean the mating surfaces of the connectors if necessary.
-
Install the T-Connector Adapter:
- Insert the T-Connector adapter between the harness connectors.
- Ensure the connectors are fully inserted and the locking tabs are secured.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector, such as the vehicle's frame or crossmember.
- Clean the grounding area of dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution: Do not drill into the vehicle floor or bed. Verify the surface behind before drilling to avoid damage.
-
Route the T-Connector Harness:
- Route the T-Connector harness to the center of the vehicle.
- Secure the wire to the vehicle’s crossmember or another mounting point using electrical tape or tie straps (not supplied).
-
Test the Installation:
- Verify the installation with a test light or trailer.
Specifications:
- Max. circuit rating: 7.5 amps per circuit
Safety Notes:
- Ensure all connections are complete for proper operation.
- Always wear safety glasses and follow safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual for additional information.
- Store these instructions for future reference.
Installation Instructions for T-One® T-Connector
Part Numbers:
- 118311
Tools Required:
- Drill (3/32” Drill Bit)
- Screwdriver
- Test Probe
- Electrical Tape or Tie Straps (not supplied)
Step-by-Step Instructions:
-
Locate the Vehicle’s Tail Light Wiring Harness:
- Find the wiring harness along the inside of the left rear frame rail.
- This harness will have a connection point with connectors matching the ends of the T-Connector.
-
Disconnect the Wiring Harness:
- Carefully separate the harness connectors, ensuring not to break the locking tabs.
- Check and clean the mating surfaces of the connectors if necessary.
-
Install the T-Connector Adapter:
- Insert the T-Connector adapter between the harness connectors.
- Ensure the connectors are fully inserted and the locking tabs are secured.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector, such as the vehicle's frame or crossmember.
- Clean the grounding area of dirt and rustproofing.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution:
- Do not drill into the vehicle floor or bed. Verify the surface behind before drilling to avoid damage.
-
Route the T-Connector Harness:
- Route the T-Connector harness to the center of the vehicle.
- Secure the wire to the vehicle’s crossmember or another mounting point using electrical tape or tie straps (not supplied).
-
Test the Installation:
- Verify the installation with a test light or trailer.
Specifications:
- Max. Circuit Rating: 7.5 amps per circuit
Safety Notes:
- Ensure all connections are complete for proper operation.
- Always wear safety glasses and follow safety precautions during installation.
Additional Information:
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.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.
Note: Store these instructions for future reference and consult the vehicle owner’s manual for additional details.