Looks like a grounding cable as its attached to bare metal. Loosely remember seeing that when I pulled mine apart, I think i had mine going to the ebrake mount though.
Poverty/College Budget 2004 TJ BB, 1.25" BL, MML, JK shocks, 31x10.5 AT2's
If it can't be fixed with squats or fish oil...your probably gonna die (u aware?)
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