Harmony Accessory Master C5/C46 Car Speakers Upgrade

This set will fit 2002 Chevy Silverado extended cab, but I was shipped 2 identical sets of wiring harnesses that only fit the front speakers but not the back. I called customer service and was offered a $10.00 refund if I could splice and solder the back speakers myself. I agreed; was never sent the refund. That's why the two stars. Would have given four if order was correct or service followed though. That said, they sound ok with stock head unit. Have to run bass setting at full because this set has 5.25 inch fronts. Hindsight I would have rather have 6.5 inch since they would have also fit and have better bass response. But ok sound for replacement. Fairly easy to install. You get door adapters for the front that replace old speakers pretty easy. The back, I used the old door adapters off the old speakers just like the front so no drilling. Tight fit but will work. Had all four replaced in an hour, but I'm pretty experienced at this. If you are not, go to YouTube before you try to remove door panels or you will break parts off doing it wrong.