I have 2 single bulb fixtures in my garage that are controlled by 1 switch. I'd like to replace 1 of the lights with a ceiling fan. The single bulb fixture closest to the switch has 2 black wires and 2 white wires screwed in. The fixture furthest from the switch has a single black wire and a single white wire connected. I don't see any green/bare/ground wires in the ceiling.

I installed a ceiling fan (no light kit) into the ceiling box furthest away from the switch. The fan turns on/off via the switch; however, now the light closest to switch isn't working.

I assume the garage isn't wired properly to permit operation of both the fan and the single light. Can anyone provide guidance?

What you did seems reasonable to me. If all you did was remove the light and replace it with the fan it should work.

Make sure the other bulb didn't just coincidentally burn out during the fan installation. If it's okay, double-check the wiring in the other box to see if a wire came loose when you were inspecting it.

That's all I've got.

Good luck,
WallyH

Agree. If the fixture was pigtailed, one of the wires could be disconnected but the through wires would work. Also, as Wally says, switch out a bulb. Did you use a fan rated box?