Turn signal do not work, checked the light bulbs they are good, where is the fuse box located on a 04 kawasaki 800 vulcan classic

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   datab.us/.../Popular%2BClymer%2Brepair%2Bmanual%2Band%2BKawa...Clymer Manuals Kawasaki Vulcan 1500 VN1500 Classic Nomad Drifter Shop ..... box /Turn signal relay / Fuses / Wiring diagrams / Specifications
   Look for a small cube with 2 wire connections.

Generally, the rear blinkers on motorcycles are not wired to act as marker lights, and only light in the turn signal mode. It is illegal in some states to run amber running lights on the rear of motorcycles, but red ones are usually OK. If your bike was modded with red lenses to have them act as running/turn, then they would have replaced the sockets to accomodate a dual filament bulb.

I would say the first thing to look at would be the fuses. Always check the simple things first. Then move on from there.

you can remove the head light bulb, power the bulb with a charger or check it with voltmeter. if bulb is good, make sure the ground is good on the light housing. if fuses are good, could be the actual switch on the handlegrips

I found the Manual telling me where it was Located.

there is only 1 flasher relay. unfotunately its a sealed type so you will have to replace it.