The difference between the Kwikee 26 Series Electric RV Step # LC371136 and # LC3711363 is that the 363 comes the switch kit while the 136 doesn't come with the switch kit.
Unfortunately just the frame isn't available so if you have pretty much everything already you'll want to go with the part # LC371136. I confirmed all of this with Lippert.
Attached is a review video for you to check out. view full answer...