2004 350z
A poor ground connection (loose, corroded, or broken ground wire) will prevent the lights from turning on even if power is supplied. Especially on 20-year-old cars like a 350Z
Last edited by bisha; Nov 4, 2025 at 10:00 AM.
There's a main body ground mounted to the rear of the trunk behind the back panel that covers up the trunk latch. (Assuming LHD vehicle) The ground connection is on the passenger side behind this panel. If the vehicle has been messed with in the past, a lot of people tap into the reverse wire to power backup cameras. This harness runs across the trunk floor pan on the driver's side and might warrant a look if a wiring fault is suspected.
Cheers!
-Icer
Cheers!
-Icer
Hey guys and gals,try for reply all lights work ,but the tail lights.night lights.sort of makes no sense that turn signs hazards brakes work.but no tail lights.guess ground somewhere.have no power to them.meter chk.appreciate the replies.







