When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The base wiring harness is different. It has less wires smaller connector. The base BUL also has a smaller connector. They are not interchangeable. Now if you get the wiring harnesses for the BUL you should be able to swap them out to the LED or LED sequential lights. The base quarter panel lights are also the same. You need a different wiring harness if you upgrade to the LED lights.