I want to add 4 led strips (2 footwell, 2 back seat) and i want them to be powered by the dome light. Could I splice those 4 new lights into one existing power source? Or is there a limit on how many additional lights i can add to 1 source? Thanks.

 

yeah the fuse will determine how many lights u can power up. LEDs though use a lot less power so you can probably get away with just grabbing power from there. The professional way of doing it is by adding a relay and grabbing power from the battery. That of course requires more work and hardware.