The house I'm working on has an old farmhouse kitchen sink that overflows and needs a snake out. There also appears to be leaking from the trap. Unfortunately, a lot of the pipes are over old tube wiring in the basement. I never work with electrical and it won't be rewired before I'd like to have the sink working. Is there a safe way to do this without waiting for new electrical to be done? The white plastic end is an access point to snake it out.