range

the top ignitors constantly spark unless the range is unplugged. I could not find a wire issue. I removed one ignitor; no luck. I ordered a new spark module. No luck. Now I need to try to repair the ignitor wire and switch - i.e., re-assemble them. I can feed the wire thru the switch but I have no way of securing it. What can I use on the bare end of the wire to secure it and make it spark?