CTV Ferguson/Thorn modsheet
I found this today whilst looking for something else of course 😊
I don't think I ever actually bought this mod kit, we just replaced the chip and resistor along with the 100uF flyback capacitor from stock as and when required.
It will almost certainly feature in one of the Ferguson Feedback issues already on here.
"This is my multimeter. There are many others like it, but this one is mine. My multimeter is my best friend. It is my life. I must master it as I must master my life. Without me, my multimeter is useless. Without my multimeter, I am useless."