I am brand new to posting - so please be patient. Also I have been out of photography for a long, long time.

My wife bought me a Canon Rebel xsi. I dug out an old vivitar 272 that my father left to me back in the 80s. I presume that these can be used as a set?

Also, I am unable to get the capacitor to charge. The manual says I can use the optional cable to charge the capacitor from an AC outlet. Of course I have no cable! Was this just a direct 110V AC cable? If so, I can make my own, yes? How long do I keep it plugged in?

Any suggestions?

Thanks