need to find a hot wire by trailer hitch

[cueman]

Hello all, I have an 07 Ford chassis Hurricane 30Q. It came with a 4 prong wiring plug for the trailer connect. My problem is the dog trailer I pull has a round 7 prong plug. I bought the Hoppy wiring connector that I need, but now I need to find a separate hot wire to make the exhaust fans run on the trailer. Any idea or what color wire I should be looking for? Thanks in advance, Jim

[cueman]

Hello all, I have an 07 Ford chassis Hurricane 30Q. It came with a 4 prong wiring plug for the trailer connect. My problem is the dog trailer I pull has a round 7 prong plug. I bought the Hoppy wiring connector that I need, but now I need to find a separate hot wire to make the exhaust fans run on the trailer. Any idea or what color wire I should be looking for? Thanks in advance, Jim

["007"]

See if this helps you any here 12v maybe on blue or black. A "T plug" should bring out all the wires you should need.