I installed new ceiling lights and one of them is not working. Nothing was existing, it was all new. I tapped into an existing electrical outlet, wired that to a new light switch, and then wired that to 4 lights, all daisy chained. It goes outlet > switch > light a > light b > light c > light d.
Everything works great when the wire to light d is not connected. If light d is connected, the breaker trips as soon as the switch is flipped. I thought it was a bad light so I bought a new one and replaced it. No luck. I've tried different light bulbs as well but nothing seems to work.
I inspected the wire from light c to light d and did not see any breaks.
Where should I go from here?