hooking up trailer lights/electric brakes
ok, got a question. just baught a utility trailer that has a 7 prong round plug. well, my 98 durango only has 4 wires, i am assuming they are for L & R turn signals, Brake lights and regular lights. how can i hook it up so the electric brakes will function properly on my utitlity trailer? an electrician friend of mine told me he can splice into the brake light wiring comming from my durango for the electric brakes so that every time current runs to the brake lights that same current will run to the electric brakes on the utility trailer and make them work. has anyone ever tried that? i also just got a 7 prong truck side plug for my durango but of course since there is only 4 wires i am thinking i need to return the plug.
next thing i am wondering is if i buy an adapter to go from 4 prong flat to 7 prong round plug truck side will that make my electric brakes work on the trailer??
thanks for the help