Exterior lights, on the fust box I see nothing that says ACC, which fust would be best to use for exterior lights to tap into?What kind of lights are you trying to hook up? Interior or exterior? Accessory (or sometime seen as ACC) is just when the car is "on" but the engine and main systems are still off. In key ignition cars, it's the first turn notch you encounter before turning one more time to start the engine. In button start cars, it's when you press the "Engine Start" button without stepping on the brakes.
For instance, the car radio, the windows, A/C blower, etc. all have a separate wire for ACC so the system can tell it to turn on when in ACC mode. The USB and 12V ports on the car also run in ACC mode as well so those could be potential fuses to tap into if they are interior lights.
I would not tap into any existing circuit. The body control modules in todays cars can be very sensitive to current draw. Adding a load a module doesn't recognize could cause it to not work correctly, trip codes/warning lights and worst case cause some VERY expensive damage.Exterior lights, on the fust box I see nothing that says ACC, which fust would be best to use for exterior lights to tap into?
Thanks for that info. I didn't know that, I'm sure I'll use that in the future.There are two 10-amp unused spares in the under-dash fuse box. One is live all the time the other is switched. I used them for my dash cam with parking mode. Like said above I would not use anything else for aftermarket accessories. I did tap the console power outlet fuse for my radar detector. That is reasonably safe since the RD would normally plug into it. Only use proper fuse taps with appropriate fuses. I used 5 amp fuses for my add ons.