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All Products – RV & Trailer Supply Milwaukee & Chicago/Trailer Parts/Lights & Electrical/Electrical Wire Harnesses & Connectors

Electrical Wire Harnesses & Connectors

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Seachoice 52961 4-Way Wishbone Style Wiring Harness 25
Seachoice 52961 4-Way Wishbone Style Wiring Harness 25'
REG. $29.99
Sale! - $24.99
You Save $5.00 (16.7%)
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Seachoice 13991 4-Way Trailer Wire Harness Extension- 48"
Seachoice 13991 4-Way Trailer Wire Harness Extension- 48"
REG. $22.95
Sale! - $18.99
You Save $3.96 (17.3%)
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Seachoice 57731 6- Way Round to 4 Flat Trailer Wiring Adapter
Seachoice 57731 6- Way Round to 4 Flat Trailer Wiring Adapter
REG. $17.99
Sale! - $14.99
You Save $3.00 (16.7%)
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Triton 12588 PWC Trailer Wire Harness for WC2-2 Series Trailers
Triton 12588 PWC Trailer Wire Harness for WC2-2 Series Trailers
REG. $135.99
Sale! - $112.99
You Save $23.00 (16.9%)
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Triton 16850 Trailer Wire Harness For Clamshell Lights
Triton 16850 Trailer Wire Harness For Clamshell Lights
REG. $203.99
Sale! - $169.99
You Save $34.00 (16.7%)
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Shorelander 5110703 Tongue Harness - 7 Prong 5 Wire FG 120 Inch | Hanna Trailer Supply
Shorelander 5110703 Tongue Harness - 7 Prong 5 Wire FG 120 Inch
REG. $131.99
Sale! - $114.99
You Save $17.00 (12.9%)
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Buyers 5601101 Electrical Junction Box with 7 Color Coded Terminals
Buyers 5601101 ABS Electrical Junction Box With 7 Color Coded Terminals
REG. $15.99
Sale! - $13.99
You Save $2.00 (12.5%)
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Curt 58272 7 Way RV Blade Connector Tester
Curt 58272 7 Way RV Blade Connector Tester
REG. $29.99
Sale! - $26.99
You Save $3.00 (10.0%)
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7-Way RV Plug Prewired To Junction Box- 8 Foot
7-Way RV Plug Prewired To Junction Box- 8 Foot
REG. $70.99
Sale! - $58.99
You Save $12.00 (16.9%)
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Triton 16328 PWC Trailer Wire Harness for LTWCI with LED Lights
REG. $119.99
Sale! - $99.99
You Save $20.00 (16.7%)
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Trucklite 142-49 Trailer Electrical Pigtail - 2 Wire
REG. $18.99
Sale! - $4.99
You Save $14.00 (73.7%)
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7 Way Trailer Wiring Repair Kit - Includes 6 Foot 7-Way Cold Weather Cable, End Connector and Juncti…
REG. $71.95
Sale! - $59.99
You Save $11.96 (16.6%)
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7 Way Trailer Wiring Repair Kit - Includes 10 Foot 7-Way Cold Weather Cable, End Connector and Junct…
REG. $96.95
Sale! - $77.99
You Save $18.96 (19.6%)
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Peterson MFG - TF536/552 - Thermal Turn Signal Flasher - 12 Volt - 2 Terminal
Peterson MFG - TF536/552 - Thermal Turn Signal Flasher - 12 Volt - 2 Terminal
REG. $11.95
Sale! - $6.99
You Save $4.96 (41.5%)
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Hayes 81794-HBC QUIK-CONNECT OEM WIRING HARNESSES FORD F-150 Flareside New Body Style 2009-2015
Hayes 81794-HBC Quick-Connect OEM Wiring Harnesses Ford F-150 Flareside New Body Style 2009-2015
REG. $33.95
Sale! - $31.99
You Save $1.96 (5.8%)
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Hayes 81797-HBC QUIK-CONNECT OEM WIRING HARNESSES DODGE Ram Full Size 1500 only all models 2013-2014
Hayes 81797-HBC Quick-Connect OEM Wiring Harnesses Dodge Ram Full Size 1500 only all models 2013-201…
REG. $40.95
Sale! - $37.99
You Save $2.96 (7.2%)
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Hayes 81798-HBC QUIK-CONNECT OEM WIRING HARNESSES CHEVROLET Silverado 2014
Hayes 81798-HBC Quick-Connect OEM Wiring Harnesses CHEVROLET Silverado 2014
REG. $40.95
Sale! - $31.99
You Save $8.96 (21.9%)
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Tow Ready 118494 T-ONE CONNECTOR Equinox All Models 2010-2015
Tow Ready 118494 T-One Connector Equinox All Models 2010-2015
REG. $107.95
Sale! - $89.99
You Save $17.96 (16.6%)
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Pollak 11-998 Interlocking Mating Connector and 4 Foot Harness
Pollak 11-998 Interlocking Mating Connector and 4 Foot Harness
REG. $44.95
Sale! - $36.99
You Save $7.96 (17.7%)
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Tekonsha ECT8901 Electrical Circuit Tester For 6 Volt and 12 Volt Systems
Tekonsha ECT8901 Electrical Circuit Tester For 6 Volt and 12 Volt Systems
REG. $25.99
Sale! - $22.99
You Save $3.00 (11.5%)
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Trailer Electrical Wire Harnesses & Connectors

Hanna Trailer Supply offers electrical wiring harnesses, adapters and connectors to synchronize your trailers' lights with your tow vehicles' lights.

Contact us today or check out our other RV and trailer products.

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