30 years? that is if it craps out early!!!
this is where it gets touchy.... for me anyway... folks slap relays in to bypass problems instead of fixing them first... i am not agains relays in the system, but am against using the relay to bypass the aged/worn/bad parts...fix it, *then* slap a relay on it if you want...(not *you* but you in general)....then when i buy it i can remove the relay and actually not have to fix bad wiring...that would be different...LOL