No instrument panel lights or radio light

Hey guys this is stumping me! None of my lights on my dash panel or my radio light is working anymore. It was working fine when I finished up with the new harness now nothing! Also the gas tank is only reading full and doesn’t change I’m stumped checked the fuses the connections did find a couple bad bulbs. But the high beam light does come on any info or troubleshooting tips for this will be great!