Sealight LED via Amazon offers its Sealight Replacement Car Backup LED Light Bulbs for $12.99. Coupon code "7PIEHEFL" cuts that to $9.09. Plus, Prime members bag free shipping. That's $4 off list and the lowest price we could find. Each bulb features around 1,000 lumens of brightness. A list of compatible sockets is available on the product page. Deal ends October 31.