The difference is that the part # LC3747453 comes with the Adapter/Harness # LC369413 and the Switch Magnet # LC369299 while part # LC3747452 does not. Aside from that these are the same step. view full answer...
The LED Light Strip for Thule RV Awnings part # TH301660 is 8mm wide and the LED Light Strip for Thule RV Awnings part # TH307135 is 12mm wide but that is the only difference. view full answer...