Went to start the truck today and it wouldn't turn over. I noticed that my glow plug light wasn't turning on so I started checking around with my icepick. Wire on the left of the switch was live and the wire on the right coming out of it was not lighting up. I pressed the button while trying and nothing changed. I did notice an area on the wire where the insulation was worn off and looked sketchy so I'm thinking of replacing the wire regardless and at a minimum putting electrical tape over it. I'm not sure what the wire attaches to but I've uploaded a picture. Can someone tell me what it is? The wire was also not appearing to be live at this spot either. This leads me to believe the button is likely not working. I'm assuming it's some kind of relay with power going in on the left and when I push the button it sends power out through the wire on the right. Any guidance would be appreciated!