Looking for some advice for my 76' 2002...Guages jump when any other electrical device is activated...like turn signals or the breaks...2002AD, at parts company, sez we have a bad ground...but which one? Also we've installed a new carbutator, Weber dvg 32/36 smogable, k8205...but try as we may we still have a hesitation when opening the accelerator...any ideas? Thanks Veith