So I took apart my Lionel SD60e last night to inspect the smoke unit wick. After tuning everything, I put it all back together. I noticed a very light noise coming out of the engine at low and medium speed. I think the wires that go from the rear of the locomotive were rubbing against the flywheel. I corrected this and moved that bundle of wires down between the motor and side of the cab wall (a very tight fit). This helped a bit, but there is still a very faint noise.
My question is this: Is that bundle of wires supposed to be on the side of the motor or is it supposed to go above the flywheel? Pics below of how I reassembled it. Any help is greatly appreciated.