i have a bad ignition switch in the run position .is there any way to bypass the switch,with a second switch

 

Sure, there's a way. I'd recommend a new switch, however. But if you want to install a 30 amp toggle switch, I'd only solder a new wire onto the existing wire (scrape away some insulation, don't cut the wire as you or someone else may want to fix it right someday, you just want to give the voltage an "alternative path") through the toggle switch, then splice from the toggle switch to the run wire (again, strip, don't cut)...