Where do the WiFi and Bluetooth antennas go?

I just did a Ram and HD upgrade to my old Mac Mini using the teardown guide. Everything went fine except the Bluetooth and Wifi signals now are very weak and can't connect to anything. I didn't see if the wires from the three antenna modules were connected to anything, but I looked for a connector on the motherboard and didn't find one. Can anyone tell me where the wires from the antennas go?