Wewill try the best to response at once. The product is designed as plug and play for most of the items. Lf you don't want to install the productyourself, it is highly recommended that you use a local professional installer. Regarding after-sales, if you need to return the product, you will return it in the originalpackaging without affecting the secondary sales. Please note that we do not accept returnsof items that have been used, damaged or altered in any way.
About the Packing: Price is for 1 pair. So usually we pack product in 1 carton(Riaht andLeft Both sides). We usually use the 3D foam shock protection - double corrugated cartonprotection - double protection with another layer of corrugated carton protection.