fuel tank question
 

hey guys. i have an 86 dodge d-150. fuel gauge doesnt work. i noticed there was a wire off at the fuel tank. i crawled up under and there are 4 wires. 2 went to the tank and 2 are laying on top. the two that are laying on top are ground wires. therre is no where to hook the ground wires back up. anybody seem to know what is wrong? thanks.....steve