Need more electrical power for indicators

Hi, having to add indicators (7 Watt led each) to make my Sprint Veloce V1 street legal. Already had it given a basic upgrade to 12v but there is not enough power to make the indicators work properly (very dim and sometimes only flashing once).  Would upgradingbtoneitherbtje flytech of VESPATRONIC Ignition kits be enough to power everything or will I have to look into adding a battery.  Also, does anyone know how many phases the upgrade kits are? Thanks, Daniel