LED Undercar kits

I bought an undercar light kit and i got all 4 lights and the switch but on the instructions it has a fuse i didnt get and it says optional relay witch i didnt get and all the red wires go to the fuse then to this relay then the black wires go to the relay and the others are ground. The switch has a wire coming from 12 volt batter, ignition or sidelights then to the switch then to the relay and the relay also has a wire coming form the battery. Is there any way to hook this up without this relay thing or the switch? I ask advanced auto if they had a relay and they acted as if they didnt know what i was talking about

Does the switch have a box or is it just a toggle switch? Your lights should simply work with a 12 volt positive off the fuse relay (find a unused fuse spot for the power)

its just a switch like the size of a quarter it didnt come with a fuse or anything just 4 tubes of lights all with wires. it says the lights all have transformers built in them but where would i run all the wires and the switch just has 2 metal prongs coming off of it

Sounds like an incomplete set , my came with a controll box and instructions said to hard wire it to the battery and ground it on the body. Each light had a clip that connected them to the controll box , 2 function buttons on/off button and strobe/flash settings button tht would cycle through the different flash patterns , took me 1 hour to install my first time too.