Squaby, I had a diagram of a moded Golden, it tells what switch is used and isn't hard to do at all. I'll try and find which computer I've got it on, (if I don't forget!), and pm it to you, if you'd like. Only thing about it is the circuitry of the newer detectors is "surface mount", so be confident you can solder well! Great luck and good hunting! Regards, Richard