I purchased my 2006 LTD used with about 30K miles. I need to replace a tail light but it is LED. Toyota dealer says OEM used bulbs. My wiriing harness has only a single connection for an LED unit??? Have been unable to find source for single LED tail light. Everyone wants to sell in pairs. Having a hard time understanding why my wiring harndess is for LED only and why this replaccent tail light is so hard to find. Welcome all input.