My mechanic buddy just shared this with me, thought I'd pass it on...

Take some aerosol foaming glass cleaner, spray it on your chrome.
Use some steel wool, and give a it good brushing. Don't go crazy and start grinding away or anything, just a apply a light buffing. (You could do this with a SOS pad, but then you'd get all that soap crap everywhere)
Polish with a soft clean cloth.

Just had my Jardine connector pipe and end caps cleaned via this method and they look great. YMMV.