If they give less light than your 21W incandescent bulbs, it seems they may be stretching the truth, and you need something with more than "21W equivalent". I see that the 30W LED bulbs are nearly all headlight bulb type, with the wrong base for your lights. I only saw one person on ebay selling them with a bayonet base.
As you know, when your red light is on, your battery is discharging despite the engine running at maximum speed.
