only 1 of 5 led toggle switches are lighting up

hello I have installed a custom switch panel on my work truck. I'm using self illuminated led toggle switches. only 1 out of my 5 switches are lighting up. I have ran one power wire to the switch panel and jumped it to every switch. I have also run one ground wire and jump it to every switch. my first thought was a bad ground. but it is the switch in the middle of the switch panel that is lighting up. so if the switch in the middle is properly grounded they all must be properly grounded. the switches are still working properly as in turning the accessory on and off. at first it was only one and I thought it was a bad switch so I replaced it. and it worked just fine for a couple flicks on and off and then that light went out again. also a different one sometimes works and sometimes it doesn't. any help would be greatly appreciated thank you