I use Craftgate waterless wash and wax. Works well on plastics, decals, fiberglass, wood, countertops, TV, glass, etc. Just spray it on, wipe with one microfiber cloth, and use a dry microfiber cloth to wipe off. You can view more info (including videos) at the following link:
http://www.croftgateusa.com/buy-crof...ss-car-washing