How to Add LED Lights to a Guitar Amplifier Foot Switch Pedal DIY Marshall DSL 40c Mods LED Lights

In this video I walk through the process of adding LED lights to the foot switch that came with my Marshall DSL 40c guitar tube amplifier. This procedure should be the same or similar on many other guitar amplifiers also. This procedure may void the warranty on your guitar amplifier and the resistor values may differ between amplifiers. Keep in mind that the circuit is still closed, however there appears to not be enough voltage to prevent the foot switch from doing it’s job. Perform this Marshall DSL 40c amp mod (modification) at your own risk. If you’re going to try this modification on a Fendrr amplifier or Peavey amplifer, you’d want to go through the same process of determining how the switches work and voltage.

DIY How to Bias a Marshall DSL 40c Guitar Amplifier Using a Multi-Meter DSL40c Measure Plate Voltage

This video covers the process of biasing a Marshall DSL40c tube amplifier. The process covered in this video will be the same or similar on many other tube style amplifiers. Bias both EL34 power tubes to approximately the same millivolts Please be sure to use caution when measuring the plate voltage, as you’re dealing with around 450 DC volts. There is also the possibility of electric shock even after the unit has been unplugged, please use caution at all times. Marshall Dual Super Lead 40c DSL40c Guitar Amplifier

Harbor Freight Pacific Hydrostar Electric Pressure Washer Review Pressure Washer Demo

This video provides an initial review of the Harbor Freight Pacific Hydrostar Electric Pressure Washer. This pressure washer sells for as little as $78 when on sale at Harbor Freight. I’ve used it for a number of tasks including cleaning vinyl siding, ATVs, concrete slabs and more. Below is the description from the Harbor Freight website.


This electric pressure washer can get up to 1650 PSI to power-clean walls, yard equipment, and vehicles easily! Lightweight and portable, this pressure washer features a pressure hose over 13 ft. 8 in. long so you can reach tougher areas and 5 in. diameter wheels for smooth transport. This is a great pressure washer for any auto garage or shop that wants to clean larger items quickly!

– Name 1650 PSI 1.25 GPM Electric Pressure Washer
– SKU 69488
– Brand Pacific Hydrostar
– Amperage (amps) 13
– Maximum pressure (PSI) 1650 PSI
– Maximum speed (rpm) 18,700 RPM
– Power cord (ft.) 35 ft.
– Hose Length 13 ft. 8 in.
– Product Height 31 in.
– Product Length 10 in.
– Product Width 10 in.
– Shipping Weight 20.25 lb.
– Accessories Included Spray gun, soap dispenser, extension nozzle, high pressure hose