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his being SGBARRACUDA's? that's not actually a starter relay, it's to kill the whole electrical system and engine when the battery disconnect is switched off. i don't know if he's kept and moved the oem starter relay, or if he's using it for a starter relay too. if you're going to have a battery disconnect, that is one of the good ways to wire it. and if you just want to use the MOROSO because it looks good, cool.
this is what is usually meant by "FORD relay"
but i think the mopar one is better looking...:D