Ground wire from under hood fuse box
Seems kinda fat for an alternator wire though. 
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Joined: Feb 2021
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I putting a hughes fi air gap intake manifold on my truck. Im putting everything back together and i can not figure out where to put a ground wire. Its the big one that comes off the fuse box under the hood. It is bundled together with the ground wire that connects to the power steering bracket. Does anyone know where this wire connects to?
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Joined: Jul 2014
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From: Fla
I’m sure that after near 7 yrs. “zramsst” has realized that the black cable circled in the image isn’t a ground wire. It’s always HOT, which a simple check with a voltmeter could’ve shown. The only thing between it and that red cable is that fuse bridging the two. Likely a 140 amp fuse. This is how the alternator powers everything while keeping the battery charged.