That large cluster of wires at the front of your engine if I am not mistaken are the wires that originally went under the radiator on the original cars. This caused major hassles on a Concorde we had, the heat from the rad caused embrittlement of the insulation around the wires which caused a major short. Dash lights and dials all went haywire and the heater came on full blast, it was July. I told my wife keep driving and take it to the dealership, it took four days for them to find the problem. I cut up a shop vac hose and the mechanic put the new wires in to it, taped it and arranged it so any water that got in it drained out, the original basically just sat there in fresh air.