Your Source for DIY Pedal PCBs and NostalgiTone! › GuitarPCB Forum › General DIY Pedal Discussion › Adding LED to Ultra Drive Mod for MKC v4 This topic has 3 replies, 2 voices, and was last updated 1 year, 4 months ago by wilkie1. Viewing 4 posts - 1 through 4 (of 4 total) Author Posts February 9, 2024 at 11:40 am #31106 AnonymousGuest I’m planning to use the DPDT wiring board to add a footswitch for the Ultra Drive Mod. Is there a simple way to add an LED that would light up when the footswitch is engaged? Thanks! February 9, 2024 at 3:12 pm #31107 wilkie1Spectator Use one side of the DPDT switch to add another resistor to parallel R15. Use the other side of the DPDT to turn an LED ON and OFF. If you parallel a 12K resistor with the stock 47K resistor you will change the R15 resistance to 9.66K. February 9, 2024 at 7:11 pm #31112 AnonymousGuest Thanks for the assistance! https://imgur.com/a/ErwKNN3 The mod replaces R15 with the DPDT board. How would I wire it up so that both R15 and the DPDT are wired at the same time? Thanks! February 10, 2024 at 2:02 pm #31124 wilkie1Spectator Author Posts Viewing 4 posts - 1 through 4 (of 4 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In