help me find my grounds under the hood

[irondiezl3]

I'm trying to find my grouds under my hood, I'm going to be cleaning and adding 4 guage for them mainly for stereo purposes but also just for general reasons i know they are old and could use it anyway. I cant find my motor ground which is the last step for my big 3 upgrade, so i need that then i want to replace every ground i can find under the hood with my spare 4 guage i have laying around it is free and i have time if anyone knowes where they are can you help me find them please id really appretiate it