OK help me i got a 1999 ek couple with a gsr . I have a type r civic cluster and the tach will work until i hit vtec and then it will cut off. Everthing else work on the cluster when vtech comes in but the tach will cut off ALSO the tach will cut off when i turn the headlights are sometimes jump around. I DONT think the cluster is bad because it would not work at all. I think its the ground, but where to start from? What do yall think???

 

help