a guy called Dewi Jones

i too have no idea. One of the team drivers is having a look at it

Matt how do again. There are no beeps emmiting from the speedo, a red light that flashes 3 times then off. But nothing. Looked through the forum but have not found that problem.
Dan

Matt, how do? I used the GM120 speedo that i bought from you for the first time last friday (yes a while since i bought it) and...it doesn't exactly work very well. I'm currently using it with a nosram dragon 10.5t motor and after only one lap it cooks the motor. The speedo/motor is not overgeared (89tspur 22tpinion in an mi3.5) so i'm a little puzzled. When trying to set it up, the speedo will not enter setup mode. Any chance of a little advice please?
Ta
Dan