I noticed tonight that while idling after a 70 mi drive in my garage, when I rolled up my windows, my corner lights, headlights, anything, would dim. Ive got a brand new alty, an older battery. My idle has been acting odd lately, sometimes near 800, other times as low as 450. Should this be occuring? I am wondering if a grounding kit might help...

 

No

Just do the BIG 3 and you should be fine....

 

What he said, but instead of a ground kit, make sure your stock grounds are clean, they are 10 yrs old...

 

Will do! Ive got some spare wire Ill use that came with an amp wiring kit. Thanks!