I own a 97 SE Pathfinder with standard transmission and I'm mounting a trailer hitch for camping. (yes i know the standard is rated for 3500.) All my trailers especially this one require the 7-Pin heavy duty plug and I'm not to sure how to wire it in. I've heard there's already a harness under the frame i can use but couldn't find what I read. Running my blue (brake) wire is not an issue and neither is my 12v. Where do i find the wires i split off of or if possible buy a harness spliter to put in with it. Thanks.