link here for my thread http://pcmhacking.net/forums/viewtopic. ... 220#p48718
I have no idea what a T400 speedo drive looks like so im not sure if its possible with it, but it could be an option ... but yeah a few components and some soldering will get the current setup working fine! .... I would be putting the components in the cabin though, not at the gearbox end ....
Wikipedia wrote:In electronic logic circuits, a pull-up resistor is a resistor connected between a signal conductor and a positive power supply voltage to ensure that the signal will be a valid logic level if external devices are disconnected or high-impedance is introduced.