I think this is a pretty bad ass tat and alot more original than just some regular guitar tat. As far as the penis thing goes, I'm not sure what kind of penises you guys have but mine isnt pencil shaped and looks nothing like a guitar jack.
nice tattoo, should look badass when healed, the rca jack *does* look kinda like a penis when you look at it...maybe consider filling the indentations in the jack tip with black with mirror/ light highlights.