Fuse 21 takes the clock out as well so probably not that, might be a dodgy tacho connection on the coil but I doubt that would stop the mfa scrolling, its usually a fault on one of the circuit boards or the voltage regulator chip. There's quite a bit of electronics in these dash pods, especially behind the rev counter and thats the one that controls the mfa as well. I was very surprised when I took mine to bits.
