Outer Limits 4x4 Board

I'm about to change my headlight wiring.

If I'm using H4 globes (low and high beam in the single bulb) do I need changeover (SPDT) relays or just use the standard SPST relays?

If I use SPST relays then I need one relay for low beam and one relay for high beam correct?

SPST is what you need, with sufficient current ratings to cover the lamps you're using. That's usually one for low, and one for high, both of the common 30A rating.

Cheers mate. Thanks for confirming it for me.