I have a 1993 2.8 300e with a no start problem. It does not have juice to the starter, no to the neutral safety switch. I traced the starter excite wire and jumped it with a jumper wire and the car starts. But there is a buzzing sound coming from inside the fuse panels relay portion, I checked and it's the long middle relay marked DOT, but will stop when either the turn signals or the 4 way flashers are on or this fuse is removed. Also the fuel gage does not register.
Can this be an ignition switch?
Thank You