does the 95 only have the ECM plug under the dash or does it have the one in the fire wall to i work for dodge and there scaners will not let me in or i tried canadian tire scaner i wont nither i am using the one under the dash am i going to have to got ford ??my check engine light comes on when i am on the highway for 2min then goes off for 2,3mabey5 min then back on??