where are the fuses for the rear turn signals located?

Yes, the right front signal does work. I did not test the socket, could I use the same tester that you would use to test a home electrical socket?

It needs to be for 12 volt DC. And an ohmmeter for checking ground continuity.

ok, so it probably isn't the fuse then after all, is it? I will look into checking the socket and if that is the case, that can be replaced pretty easily can't it? is there any other things that could be causing it also?