ok I bought a speedometer but when I hooked it up all that happens is the tack jumps slowly as I plug it in and then nothing illuminates no digital reading TACh won't work all it does is say my brights are on even when therenot! My blinkers show up but that's it. When. I bought the bike the guy had ripped out two wires out of the main wiring harness. ( they were headlight wires. ) so I just decided to by pass the whole harness and just spliced it together at the headlight. Would that be the reason its not working?! Thanks so much!

 

the reason is you fucked it all up..

 

well said.......