onehot69stepside
+1y
well, im not sure but i think you have an electronic speedo so that would rule out the cable. Good guess though. maybe not, like i said im not sure. try and check if the smoke is actually coming from the column itself or if its creeping in from up underneath the dashboard. Also, you are referencing it to rpm and speed both. Will it smoke if you are in neutral or park and revving your engine or does it only do it while moving. If it only does it while moving, it would get worse as you go up the gears and go faster right? If it does it while siting still and revving, it could be some sort of slight electrical short but with resistance through the circuit thats keeping it from being a dead short. When you rev your engine the alternator puts out a little more voltage so this could be causing it to only do it whil;e revving.
Just some thoughts, dont beleive a word i say.