4 wire plug to 7 wire
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Junior User
Joined: Jul 2004
Posts: 67
Likes: 1
4 wire plug to 7 wire
my brother has a 04 f150 old body style with out trailer tow he's looking to get a small boat so we added a class 5 hitch since he only has the ford 4 wire plug we would like to add a seven wire plug is there a easy way of doing this like buying a plug that you don't have to splice something like unplugging the 4 wire and plugging the seven wire in we would like to add the ford 4 and 7 wire plug
Postmaster
Joined: Nov 2004
Posts: 2,511
Likes: 0
From: Marion, VA
YOu don't need the 7 wire plug unless the trailer has elecric brakes. If you do need the 7 wire plug, you will need to add a brake controller and run a wire to it from the plug. Also, if you plan on towing a camper, you would want to add a hot wire to recharge the camper battery while traveling. Neither is a big job if you are mechanically inclined at all.
Freshman User
Joined: Feb 2005
Posts: 37
Likes: 0
From: Wichita, KS
they make a pigtail connector that will plug right into both the plug and the harnes and connects them. if you cant find one just build one. buy both plugs and simply splice them together, when finished towing, just remove the pigtail and throw it in the glovebox
Laughing Gas
Joined: Aug 2004
Posts: 808
Likes: 0
From: P.G. VA
swing by a parts or trailer store and take a look. Today you can find plugs and converters for just about any situation that just plug into the vehicles existing harness. Most are designed with two pieces. One piece is basically a "t" fitting that plugs into the vehicles wiring harness. Usually no splicing required. The second piece plugs into the "t" and has whatever type of trailer plug you desire and mounts to the hitch or wherever you choose to.
Alot simplier than in the old days of tracing wires and splicing and hoping it would work!!
Alot simplier than in the old days of tracing wires and splicing and hoping it would work!!
