visor lights wont come on

[ktblogistics]

you might have two wires coming out of the cab and going to visor, look there for broken wires, check if you have ground and power on them, fixed few volvos and cascadias with same issue, wires (positive) were broken at the place where it gets out of cab structure,
see you have access to both wires at visor , check what you are missing there power or ground