Hey everyone new here, have a problem.. I recently replaced my cps, ( truck would die on me) and got that all taken care of, now i have a new problem... The truck is a 99 auto 7.3 now it runs rough and the service light is on.. I took it to get scanned, and it didnt read anything.. they said its because its not the check engine light ? its the service soon light, so it wouldnt read any codes... after reading a few threads I now thinking its the wiring harness under the valve cover ( the externals looked fine) Has anyone else delt with this ? Just wanted to double check before i order up the kit that comes with new gloplugs, wiring harness and valve seal. Thanks.