Thank you for your purchase of the Class I 1-1/4" Curt Trailer Hitch Receiver # C11510 for your 2008 Infiniti EX35!
When it comes to the wiring you'll have to use a splice-in option and for that I recommend the Curt # C59236. This kit has the black module box that helps protect your OEM wiring and a power lead so your trailer lights will be powered straight from your vehicle battery. To install this you will use the tester to see what wires carry the functions you need to connect to but... view full answer...