I purchased two sets of the 12 volt systems. I installed the first one with out any complaints, but the second one is still a problem. The product came with a defect (a piece of yellow plastic missing) from the battery cap and the box was sealed. I contacted Flow-Rite by email and was informed to return the product back to Camping World (I was more than a three hour drive each way), mail it back to Flow-rite at my cost and they would look at it (no mention of replacing it) or I could go to their web site and purchase a new one. Once I returned home I went to the local Camping World and they are out of stock of the product and don't know when they will have it in stock. If I had to recomend or make a product recomendation based on customer service this product is great as long as you don't need Flow-Rite's customer service.