Hi Guys, Im trying to internally amplify a guitar, ive got hold of a tiny card from the net and need a bit of help wiring it, I understand most of the connections but the power supply confuses me. I have 3 grounds which I presume are common , At the bottom I have the speaker connections , no problem there , and at the top the stereo input connections, no problem with those either . Im left with the centre 3 marked Sw, +5.v and gnd. The 5 v I presume takes the positive from the power supply but where would the negative go? Does anyone know the purpose of the switch connection and how that should be wired , if at all. Ill say thank in advance to anyone who can help me with this.
Regards
Frank
Just found shot on you tube, the switch wire is not used, so I can now start my project.