Quote: Yeah, in my limited knowledge that's what it seems like. Simply plugging in a new turn signal relay shouldn't be able to shut down the entire electrical system.
Did you remove the new flasher leaving the socket empty and try to light up anything? This is really difficult to guess without seeing it and being able to wiggle stuff about.
A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)