Wurlitzer E.P. 140B Complete Wiring Harness with L.E.D ModVintage pianos have shielded cables that deteriorate with age. The shield breaks down and loses it's purpose. Along with the fact that audio wires are running along with AC wires is not a great idea in preventing noise. We have painstakingly redressed the wires with new shielded cable including the AC wires, added new pots, new pins, new connectors, new jack and added our L.E.D modification. Currently your neon power light runs on AC and the wires run along with your audio cables. What we have done is replace the neon bulb on AC with an L.E.D which runs on DC voltage. Now there is no chance of any AC interference in you audio signal path.
You will need to make a small change to your amplifier to run the L.E.D- see instructions
Wurlitzer 140B L.E.D Mod DiagramWurlitzer 140B L.E.D Installation