| Hi mate,
I installed one on my 748s and didn't find anywhere suitable to put a transponder on the frame. However, my kit came with Datadot liquid which I used liberally on inconspicuous areas of the frame/engine casing/inner wheels/headstock etc etc. I also stuck the warning stickers in prominent places (one of which was close to the point where my beast of a chain/ground anchor passes through the frame just to let anone brave enough to have a crack know that its security marked). The etching was quite simple (but take care, it's lethal stuff to remove if you fcuk it up).
Good luck
Jacko. | 
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