Add menus to kitchen unit and welding rig (WIP, help from smart people needed!)

In my quest to make the RV kitchen unit and welding rig have all the same features as their portable counterparts, I'm trying to add the use_hotplate  and soldier_weld iuse menus to them.  As I don't actually know how to code, it's a disaster, errors out the wazoo.  I'm hoping if I try to put this together, people who actually know how to code will see it, laugh for a while at all the idiotic mistakes, and help me fix it.