If the lamps are fitted with traditional halogen bulbs they take a fair whack of amperage and you ought to use relay to avoid frying your headlamp circuit if linking into main beam
Richard V6 will be along soon with a diagram & recommendations
I would strongly concur with that having experienced total headlamp failure when the fuse blew on switching to main beam that was, then unknown to me, linked to the spot lamps. SWMBO who was with me wasn’t impressed.
A professionally installed relay cured the issue.
