99 Tahoe turn signal switch issue-Lights flickering

[slam59]

My 99 Tahoe turn signal switch is having issues. When my lights are on and I move the tilt wheel the headlights flicker with each setting that the wheel moves and locks into. My friend takes dash and cover off of steering wheel and we discover a wire barely hanging on, a bit corroded and the rubber covering the wire rubbed off due to rubbing when wheel is tilted. He says this type of harness has to be replaced due to the way it's wired into the harness. Has anyone here ever have an issue with their turn signal switch harness and was able to just fix the wire and not have to get a new harness?