If I remember correctly, they just pull off the arms and then the arms will go through the control panel when you take it out from under the dash. They don't come off real easy but then if they did, they would fall off all the time when used. Don't take my word for it because it's been a long time 1975 since I did it. Wait for more input on the site and see if others agree. I wouldn't want you to mess them up on my account!