Hazard warning flasher relay

[Akgriffith]

My hazard flasers don't work on my 77....or rather don't exsist. The PO removed them all together. I'd like to put them back in. Does anyone know if the hazard warning flasher relay (this thing https://www.midwest-bayless.com/p-13172 ... 78-u8.aspx ) is just a regular relay or do I need this special relay? Also, which wire goes to which terminal on the relay? I have the wiring diagram, but that doesn't say which terminal each wire goes to. So far I've been lucky because even though the po redid a bunch of wiring he actually used the proper color wire so the diagram is very helpful.