Here's a short video (it's actually 3 separate ones merged into one) of my "1003-J". I'm using an electronic flasher and relay as of now, but I've found a true eddy wheel flasher from a 3T22 I will be acquiring soon....it just doesn't sound right with the electronic one. Note the volume change when I move the blower belt with my foot.
http://www.youtube.com/watch?v=sTYE3ZiB38I
BTW, its sturdy now, and won't fall over an break the solenoid bar in half again.