Hey guys, so my car has a few different problems and I'm trying to rule them out one at a time. So my car has a dcm 42 and i also have ground problems. From what I have seen about the code 42 it could be related to bad grounds? Well with the car running at idle and lights on, the lights are solid for the most part. Give it a little gas and every light in the car pulsates with the rpms. I'm really getting frustrated with all the wiring bugs so any little bit of info would be greatly appreciated.