I have a Bassman 135 amp from 1978. I was checking out the condition of the power supply caps under the "doghouse" cover. I found a pair of wires that are fed from under the cover through a grommet into the chassis, and simply cut off: The wires are soldered into the circuit at this point on the schematic: The amp is all original, and has never been repaired or modified. I searched the web for images of Bassman 135 amps, and the few pics I found all show the two clipped wires. Anyone know what the purpose of the wires could be? Temporary use during manufacturing or initial testing? Thanks!