LOL!!! You kill me!... with a rusty butter knife, to boot!
For a good, rugged, inexpensive relay that'll last a while and carry just about any short-term current you'd need, go to an auto or tractor parts store and get one of those old Ford tractor starter relays. They're easy to bolt up, difficult to mess up, and I've put several on old lawn mowers I have worked on, and saved a bunch of money!!!
Overkill, possibly. Inexpensive and works, yes.
JMHO...
