Here is my experience with DDM Tuning. I had read threads about this company and people have seem to have had good luck with them, they have a lifetime warranty and the prices and for the most part pretty good. So I purchased two complete sets including ballasts, wiring harness's and bulb's. A set for the bike (already had hid's in it just wanted to change the color, but went ahead and purchased new ballasts, wiring harness and bulbs) and a set for one of my other vehicles (which also included ballasts, bulbs and wiring harness). Only took 16 days to receive my shipment....oops they forgot to send the mounting brackets (only $2.99 a set and I purchased two sets). Notified the company, they wanted pictures of everything that I had received, so I did as they had requested and sent them pictures. Only took another 14 days to get them. Within the first 2 weeks of installation one ballasts had quit working. Since I had not installed the other set of ballasts yet I used one of them to keep me going. Then I notified the company, they had me send the ballasts back to them so they could test it (of course I had to pay shipping back). They received the ballast in 3 days shipped via normal ground shipment. On the day that they received it they had tested it and emailed me back saying it was faulty and are sending me out another one. Which I still have not received. Now the my lights have quit working again. So I took the entire system out and will be purchasing a different brand.
In my opinion this company sells junk and I will not be purchasing anything else from them and would advise others to be very leery of them.
In my opinion this company sells junk and I will not be purchasing anything else from them and would advise others to be very leery of them.