I'm not sure, but if I ever I buy a kit, I'd buy the relays with it, juuuuuust in case.
You could also just buy kit without the relays, and if it doesn't work, or flickers or whatever, you could pick up the relays later.
Or maybe somebody else has a definitive answer.
You could also just buy kit without the relays, and if it doesn't work, or flickers or whatever, you could pick up the relays later.
Or maybe somebody else has a definitive answer.