Need some turn signal school

Doesn't the hazard flasher have like three wires on it or something? I just went down and got another flasher and it did the same thing as the replacement one. Good strong power at one side and then when plugged in had kind of weak power coming out of the other? I'll go take some pictures.
Three wire-one is indicator/needs proper load to work.
I do a lot of electrical stuff, its hard for me to wrap my head around it too.
First go round with signals was wiring a universal switch into a M-37 for a buddy.

The front and rear signals are isolated from each other for brake light function. Just to make it even more confusing. A good test light is the best. Turn off the meter and put it back in the toolbox.