Are there any mysteries I need to know about when wiring up simple 4 pin lights for a trailer? With all the computer tech in the 04 Titan, I don't want to find out I screwed up something.
If I recall the brake lights will work but anything beyond that will require a relay or two. If you look in the fuse/relay box under the hood behind the battery you will see locations for tow relay 1 and tow relay 2.