97 olds 88-ls head & dash lights flicker

[Marshallscottjohns]

I have owned a 97 Delta 88 LS since 1999 and have experienced a problem with the electrical system about 18 month ago I thought I had it fixed when I found that when unplugging the red and the gray plug in to the alternator everything was ok so I seperated the wires from the harness and run them thru a seperate insulated protector and this worked good for a few months but now the problem is back. So far I have cleaned the ground on the driver and passenger under carpet they were like new no corrosion, I also cleaned the ground on the fender wall near the battery and he 2 grounds on the opposite side of car on fender wall. Would anyone have an additional idea, any help would be much appreciated. Thanks in advance

[back2life]

check around in the front bumper/hood area for grounds for the turn signal and headlights. also the trunk cargo area on side behind carpet.