I'm going to be linc and syncing my 1991 200 Merc this spring. I'm trying to get the timing checked and the idle adjusted because I've been messing with all the screws under the hood to keep it from stalling at low rpms. I keep reading in posts about this bias wire between the two switch boxes. Is this bias wire in place after you remove the idle stabilizer box or is it in place all the time regardless if you keep the idle box or not? On my motor when I replace the two switch boxes last season that bias wire was already there. My idle control box is still in place and all wires still attached.