Step 3:

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wht to red.JPG
Connect the battery clamps by twisting both black wires together and crimping them on the black (negative) clamp and both white wires on the red (positive) clamp.
As with all wiring, be certain there is no bare metal showing at any of your connections. You want to light up your booth - NOT your booth frame! And you certainly don't want to electrocute anyone.