We came across this little mod for the Commodore 64 a couple of years ago and WizardNJ designed a neat PCB which simply clips inside the Commodore 64 on to pins 1,3 & 4 of the Cartridge Port using the Red, Green & White IC Clips. The old Red LED is pushed out and the new mod is simply pushed in and secured, if needed with a double sided sticky pad. The cable is detachable if you ever need to work inside your 64 with the lid off. The original article is here - http://www.nightfallcrew.com/04/03/2011/commodore-64-irq-bicolor-led/ and a recent review here - https://lyonsden.net/commodore-64-irq-led-mod/ Now available for the Commodore 64 Breadbin, Commodore 64C Slimline with a rectangle LED & 40cm Cable & the Vic 20. These are in stock, £9 Each, plus postage, we accept PayPal for details just email us, sales@sharewareplus.com Updated 1st March 2024