bulbs for tracker anchor/running light

Noticed my light is on the weak side but when i went to Wally World to get a replacement too many choices when i don't really know the right one. I Have two types, one has four leads push in and one has two contacts twist base. Could someone tell me which of each type needed so the 'flying' bass boats will see me? Thanks.--shu

If light is dim probably a corroded contact. Bulbs work or don't. Take bulb out should have a number on the base . Auto part dealers are more helpful than wallyworld.

Thanks for the info, got my magnifying glass and flashlight out and found the twist in bulb is a 1004 12 watt, so off to advance auto parts.--shu