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Commonly used electrical connectors and adapters for your convenience
Electrical Testers & Standard Electrical Connector Wiring Diagram

F4T1 F448 F412     S412     F4C4

4 Way Flat and Square Connectors Used for utility and boat trailers. F218 F4T1 F4C4 F401 F448 F496 F412 F4HD F4TC BK4F S412     2 way flat, 18 ga. wire, 18" one end only   4 way flat, 18 ga. wire, 12" male end ONLY   4 way flat, 48" long female end ONLY with LED and dust cover  4 way flat male and female loop, 18 ga. wire, 12" long   4 way flat male and female loop, 18 ga. wire, 48" long   4 way flat male and female loop, 18 ga. wire, 96" long   4 way flat, 18 ga. wire, 12" male end, 12" female end, set   4 way flat, heavy-duty, 18 ga. wire, 12" male, 48" female, set   4 way flat connector cover, trailer end - fits #F412 & #F4HD   mounting bracket for 4 way flat connectors, black finish   4 way square, 18 ga. wire, 12" male, 12" female end, set     Weight 0.04 lb 0.06 lb 0.21 lb 0.10 lb 0.20 lb 0.40 lb 0.12 lb 0.29 lb 0.02 lb 0.10 lb 0.12 lb   Master Pack  100*  800*  100*  200*  100*  100*  400*  200*  100*  350*  100* *Available carded

WB25	4 Way Flat Trailer Harness Offers complete 4 way wire harness for up to 25' trailers WB25     4 way flat trailer harness wishbone, 25' long   dual bonded left/running and right/running wires     Weight 0.84 lb   Master Pack 50

R4TD R4CD      R4TG	4 Way Round Connectors Used for utility and agricultural trailers. R4TD R4CD R4TG R6CG     4 pole, heavy-duty die-cast, trailer end - fits #R4CD   4 pole, heavy-duty die-cast, car end - fits #R4TD & #R4TG  4 pole, heavy-duty die-cast, threaded trailer end for wire guard  Wire cable guard for #R4TG     Weight 0.17 lb 0.38 lb 0.17 lb 0.17 lb   Master Pack 250* 100* 250* 300* *Available carded

F5C1 F5C6 F5T1 F5T4 BK5F F5CC	5 Way Flat Connectors Used for boat and utility trailers. F5C1 F5T1 F5C6 F5T4 F5CC BK5F     5 way flat, 18 ga. wire, 12" female connector   5 way flat, 18 ga. wire, 12" male connector   5 way flat, 18 ga. wire, 72" female connector  5 way flat, 18 ga. wire, 48" male connector  5 way flat dust cover, fits F5C6 and F5C1, black  mounting bracket for 5 way flat connectors, black finish     Weight 0.09 lb 0.09 lb 0.33 lb 0.26 lb 0.03 lb 0.10 lb   Master Pack 400* 400* 150* 150* 100* 350* *Available carded

R6TC R6CC R6TG R6TD R6CD     R6CK B456 R6KL R6C4 R6K4	6 Way Round Connectors Used for horse, farm and utility trailers. Available in plastic or heavy-duty die cast. R6TC R6CC R6TD R6CD R6TG R6CG R6CK R6C4 R6K4 R6KL B456 BK67     6 pole, ABS-chrome plated, trailer end, fits #R6CC   6 pole, ABS-chrome plated, car end, fits #R6TC   6 pole, heavy-duty die cast, trailer end, fits #R6CD & #R6CK   6 pole, heavy-duty die cast, car end, fits #R6TD   6 pole, heavy-duty die-cast, threaded trailer end for wire guard  wire cable guard for #R6TG   6 pole connector kit, pre-wired for 4 way flat, die-cast, car   6 pole connector kit, die-cast, car end with 48" long wire   6 pole & 4 flat, complete connector kit with mtg. brkt., clam shell 6 pole connector kit with LED lights, ABS-black, car end, clam shell mounting bracket for 4, 5, 6 pole connectors, black finish   replacement mounting bracket for #R6K4, #F7K4 & #F7KU, zinc   Weight 0.12 lb 0.35 lb 0.17 lb 0.40 lb 0.19 lb 0.17 lb 0.66 lb 0.94 lb 0.74 lb 0.42 lb 0.19 lb 0.20 lb   Master Pack 400* 300* 250* 100* 250* 300*   80*   40*   48*   48* 250* 100* *Available carded

F7TZ F7CZ F7TB F7CB F7DT      F7DC F7CK BK7B BKU7 F7K4 F7KL F7H8 BKP7	7 Way Blade Connectors Used for RV travel trailers. Available in plastic or metal. F7H8 F7TZ F7CZ F7TB F7CB F7DT F7DC F7CK F7C4 F7K4 F7KL BK7B BKU7 BK67 BKP7     7 blade type molded trailer cord, 8' long (2)10 ga. (1)12 ga. (4)14 ga. 7 pole-blade type, metal housing-zinc, trailer end  7 pole-blade type, metal housing-zinc, car end  7 pole-blade type, ABS housing-black, trailer end  7 pole-blade type, ABS housing-black, car end  7 pole-blade type, ABS, trailer end with 2-bolt wire clamp  7 pole-blade type, car end w/built-in mtg. bracket & 2-bolt wire clamp  7 pole connector kit, pre-wired for 4 way, ABS-black, car end  7 pole conn. kit, pre-wired for 4 way, ABS-black, 48" lg, car end  7 pole & 4 flat, complete connector kit with mntg. brkt., clam shell  7 pole connector kit with LED lights, ABS, car end, clam shell  mounting bracket for 7 blade type connectors, black finish  universal mounting bracket for 7 blade type connectors, black  replacement mounting bracket for R6K4, F7K4 & F7KU, zinc  7 pole trailer end plug holder bracket with screws, black     Weight 2.76 lb 0.23 lb 0.47 lb 0.18 lb 0.27 lb 0.22 lb 0.29 lb 0.56 lb 0.92 lb 1.10 lb 0.55 lb 0.15 lb 0.20 lb 0.20 lb 0.15 lb   Master Pack 16 100* 100* 100* 100* 200* 120* 100*   48*  24 48 200* 100* 100* 100* *Available carded

F7UF F7DF   F7OF SP05 F7CF       F7U7	7 Way Blade 5th Wheel/Camper/Gooseneck Wire Harnesses These kits plug into the vehicle's factory wiring harness at the back of the truck and reach 7' into the truck bed Come pre-wired with a 7 way blade type connector      Use for 5th wheel, gooseneck and camper allocations   F7UF F7DF F7OF F7CF F7U7 E7UF SP05     Universal 7' long wire harness with 7 blade OEM plug, set OEM T-connector w/7' long 7 blade OEM plug wire harness, set fits: Dodge 2000-08 full size Ram, 2009 2500 & 3500 Ram HD pickups OEM T-connector w/7' long 7 blade OEM plug wire harness, set Chev: 1999-2011 Sierra & Silverado Dodge: 2009-11 Ram 1500, 2010 Ram 2500 & 3500 HD Ford: 97-11 F150, 98-11 F250 SD, 98-03 F250 LD, 98-11 F350 Nissan: 2004-11 Titan OEM T-connector w/7 1/2' long 7 blade plug wire harness, set Chev: 1999-2011 Sierra & Silverado Dodge: 2009-11 Ram 1500, 2010 Ram 2500 & 3500 HD Ford: 97-11 F150, 98-11 F250 SD, 98-03 F250 LD, 98-11 F350 Nissan: 2004-11 Titan 7 blade with OEM plug with 7' lg blade plug wire harness, set Chev: 1999-2011 Sierra & Silverado Dodge: 2009-11 Ram 1500, 2010 Ram 2500 & 3500 HD Ford: 97-11 F150, 98-11 F250 SD, 98-03 F250 LD, 98-11 F350 Nissan: 2004-11 Titan 30" long bed extender for F7CF and F7U7 1/2" spacer for car end 7 blade type connectors, black   Weight 1.9 lb 2.0 lb 1.9 lb 1.9 lb 2.2 lb 0.47 lb 0.07 lb   Master Pack  20  20  20  20  20 100  150

F7CL OE12 OM12 F7CO OSRA EO24 TC4C F7KU	OEM Connectors For Ford, Chevy, GMC, Dodge and Nissan full size pickups OE12 OM12 EO24 TC4C TC5C OSRA F7CO F7CU F7CL F7KU BK67 BKU7     OEM connector, 12" long, female end OEM connector, 12" long, male end OEM connector extender, 24" lg. - extends OEM wiring for conversions OEM wire harness adds 4 way flat plug with dust cover OEM wire harness adds 5 way flat plug adapts rectangular OEM plug to round OEM plug, 14" long 7 pole-blade type OEM connector, car end 7 pole-blade type OEM connector with reflector, car end 7 pole-blade type OEM connector, twist lock connection 7 pole & 4 flat con. kit w/Ford, Chevy Hummer & Nissan OEM plug replacement mounting bracket for #R6K4, #F7K4 & #F7KU, zinc universal mounting bracket for F7CO and F7CU, black   Weight 0.24 lb 0.25 lb 0.52 lb 0.55 lb 0.61 lb 0.36 lb 0.21 lb 0.21 lb 0.21 lb 0.84 lb 0.20 lb 0.20 lb   Master Pack 100* 100* 25 35 35 50 100* 100* 100*  24 100* 100* *Available carded

R7TD R7CD R7TB R7CB R7CK BK7R BKU7 BKP7	7 Way Round Pin Connectors Used for commercial trucks and trailers. R7TB R7CB R7TD R7CD R7CK BK7R BKU7 R7CG BKP7     7 round pin, ABS housing-black, threaded trailer end   7 round pin, ABS housing-black, car end  7 round pin, die cast, threaded trailer end for wire guard   7 round pin, die cast, car end  7 round pin connector kit, wired for 4 way, die cast, car end  mounting bracket for 7 round pin connectors only, zinc  universal mounting bracket for 7 pole connectors  wire cable guard for #R7TD and #R7TB   7 pole trailer end plug holder bracket with screws, black    Weight 0.27 lb 0.29 lb 0.51 lb 0.70 lb 0.70 lb 0.15 lb 0.20 lb 0.21 lb 0.15 lb   Master Pack 180* 100* 100* 100*   60* 200* 100* 200* 100* *Available carded

R9TB R9CB BK7B	9 Way Electrical Connectors Used for heavy trucks and motor homes. R9TB R9CB BKU7 BK7B     9 round pin, ABS housing-black, trailer end  9 round pin, ABS housing-black, car end  universal mounting bracket for 7 pole and 9 round con.  mounting bracket - 7 blade type and 9 round connectors    Weight 0.26 lb 0.32 lb 0.20 lb 0.15 lb   Master Pack 200* 200* 100* 200* *Available carded

R44A F45R R6CK    R6KL F7CK F7KL R64F R67F F72P R74F F74F F74L F75F F75W F75C F76S F76RB BKP7 F7BA R74R	Trailer Connector Adapters Conveniently adapt vehicle's plug to multiple trailer plugs. R44F R44A F45R R6CK R6C4 R6K4 R6KL F7CK F7C4 F7K4 F7KL R7CK R64F R64L R67F F72P F74F F74L F75F F75FB F75W F75C F765 F76S F76R F76RB SP76 F77R F77FB F7BA R74F R74R R77F BKP7     adapts 4 way round (car) to 4 way flat (trailer) - fits #R4CD   adapts 4 round (car) to 4 flat (trailer) - fits #R4CD & re-wireable adapts 4 way flat (car end) to 5 way round (trailer end)  adapts 4 way flat (car end) to 6 way round (trailer end)  adapts 4 way flat (car) to 6 way round (trailer), 48" long  adapts 4 way flat (car) to 6 round & 4 way flat (trailer)  adapts 4 way flat (car) to 6 round with LED lights (trailer)  adapts 4 way flat (car end) to 7 blade (trailer end)  adapts 4 way flat (car) to 7 blade (trailer), 48" long  adapts 4 way flat (car) to 7 blade & 4 way flat (trailer)  adapts 4 way flat (car) to 7 blade with LED lights (trailer)  adapts 4 way flat (car end) to 7 round pole (trailer end)  adapts 6 way round (car end) to 4 way flat (trailer) - fits #R6CD adapts 6 way round (car end) to 4 way flat (trailer) with LED   adapts 6 way round (car end) to 7 blade (trailer) - fits #R6CD   adapts 7 blade (car end) to (2) 12-volt power supplies - 15 amp adapts 7 way blade type (car end) to 4 way flat (trailer end)  adapts 7 way blade type (car end) to 4 way flat (trailer) w/LED  adapts 7 way blade type (car end) to 5 way flat (trailer end)  adapts 7 way blade type (car) to 5 flat (trailer) with back-up alarm   adapts 7 way blade (car) to 5 way flat (trailer) w/pig tail   adapts 7 way blade (car) to 5 way flat (trailer) 2' lg. molded cable  adapts 7 way blade (car) to 6 round (trailer) with 5 (or 4) way flat  adapts 7 way blade (car) to 6 round (trailer)-brake pin switchable adapts 7 blade (car) to 6 round (trailer)-brake to outside pin  adapts 7 way blade type (car) to 6 round (trailer) with back-up alarm adapts 7 blade (car) to 6 round (trailer)-brake to center pin  adapts 7 way blade type (car) to 7 way round pole (trailer)  adapts 7 way blade type (car) to 7 blade (trailer) with back-up alarm adapts 7 way blade type (car) to a back-up alarm   adapts 7 way round pole (car end) to 4 way flat (trailer end)  adapts 7 way round pole (car end) to 4 way round (trailer)  adapts 7 way round pole (car end) to 7 way flat (trailer end)  7 pole trailer end plug holder bracket with screws, black    Weight 0.11 lb 0.29 lb 0.16 lb 0.66 lb 0.94 lb 0.74 lb 0.43 lb 0.56 lb 0.92 lb 1.10 lb 0.55 lb 0.70 lb 0.11 lb 0.26 lb 0.58 lb 0.21 lb 0.17 lb 0.27 lb 0.24 lb 0.28 lb 0.26 lb 0.48 lb 0.26 lb 0.28 lb 0.23 lb 0.32 lb 0.22 lb 0.73 lb 0.40 lb 0.19 lb 0.28 lb 0.69 lb 0.77 lb 0.15 lb   Master Pack 300* 200* 240*  80*  40* 48 48 100*  48* 24 48  60* 250*   70* 250* 100* 100*   70* 100*  80* 140* 40 100* 100* 100* 100* 100* 20 20 100* 100* 100  50 100* *Available carded

PM32	Power Converter Designed to draw power from the tow vehicle's battery, eliminating the excess draw on the tow vehicle's turn/stop/running light circuits. This is very important for newer vehicles. Converts a 3 wire (separate brake light) system to tow a trailer with a 2 wire system (brake and turn combined). Can be used as a power module (2 to 2) by not using the brake wire. PM32     3 light to 2 light power converter, 5 amp.     Weight 0.53 lb   Master Pack 100* *Available carded

TC32           TC54      TC5P	Tail Light Converters Convert separate amber turn light systems (3 wire) to the combined turn light system (2 wire). Black plastic housing with 18 ga. wire. and 18" lead wires on each side of converter. #TC5P protects both vehicle and trailer from harmful short circuits that may damage sensitive wiring components. TC32 TC54 TC5P     3 wire to 2 wire converter (no plug included)   5 wire to 4 wire converter with 4 way flat plug   TC54 with built-in circuit protection, 5 amp.     Weight 0.23 lb 0.23 lb 0.25 lb   Master Pack 100* 150* 100* *Available carded

C6D2 CF74	Electrical Coils Retractable memory coils for tangle-free use C4B0 C6D2 C7D2 CF74 CF75     4 way round (ABS),  16 ga., 10' long (fit R4CD only)  6 way round (metal), 14 ga., 12' long  7 way round (metal), 14 ga., 12' long  7 way blade-type (car end) to 4 way flat (trailer end) 6' lg.  7 way blade-type (car end) to 5 way flat (trailer end) 6' lg.    Weight 1.5 lb 4.2 lb 4.4 lb 0.87 lb 1.01 lb   Std. Pack 40/bulk 12/bulk  8/bulk 20/bulk 20/bulk

F4CT           F5CT R7CT           F7CT R6CT F7TE	Electrical Testers Check conductivity of all circuits Quickly identify lighting problems F7TE simulates electric magnet brakes on trailer F5CT can be left attached for continuous line monitoring F4CT F5CT R6CT F7CT R7CT F7TE     4 way flat circuit tester   5 & 4 way flat circuit tester, continuous monitoring   6 round pin circuit tester   7 way blade circuit tester   7 round pin circuit tester   7 way blade trailer emulator     Weight 0.03 lb 0.09 lb 0.2 lb 0.2 lb 0.1 lb 0.2 lb   Master Pack   100*   100*   250*   150*   100*     20* *Available carded

	Dielectric Grease Protects electrical connections and wiring from salt, dirt and corrosion. Can be used for sealing, protecting and insulating. Improves electrical performance by reducing arcing and voltage drop. Can also be used for lubrication of plastic and rubber. DEG7     7 gram tube, electrical lubricant     Weight 0.02 lb   Std. Pack 1/bag

R6CG & R6TG (sold separately)	Cable Guards Protect and support wires R6CG R7CG     wire cable guard for #R4TG and #R6TG trailer ends   wire cable guard for #R7TB and #R7TD trailer ends     Weight 0.17 lb 0.21 lb   Std. Pack 300/bulk* 200/bulk* *Available carded

	Weather Guard Boots Made of rubber for a tight seal Protect wires from water and dirt WG46 WG7R     weather guard for 4 and 6 round pin car end connectors   weather guard for 7 round pin car end connectors     Weight 0.01 lb 0.08 lb   Std. Pack 250/bulk* 250/bulk* *Available carded

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Note: Standard wiring pictured below as viewed from the rear of connector (where wires attach). Not all trailers/vehicles are wired to this standard. The use of an electrical circuit tester is necessary to ensure proper match of vehicle's wiring to trailer's wiring. With the 6-way plugs, the 12V wire and electric brake wire may be reversed to accommodate trailer (especially horse trailers.)

6-Way Plug Car End (View from back of plug where wires attach.)  Screw Hole	6-Way Plug Trailer End (View from back of plug where wires attach.)  Screw Hole
7 Way Blade Plug Car End (View from back of plug where wires attach.)	7 Way Blade Plug Trailer End (View from back of plug where wires attach.)
*7 Way Round Plug Car End (View from back of plug where wires attach.)	*7 Way Round Plug Trailer End (View from back of plug where wires attach.)

Warning: It is necessary to use an electrical tester to establish proper match of vehicle's wiring to trailer's wiring. Failure to do so may cause damage.

*Due to the wide variety of applications on the 7 way round plug, it is necessary to take extra care in matching the vehicle's wiring to the trailer's wiring.

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