It is the black plastic part about 6inches by 12 inches, behind the battery, attached to the driver's side fender with two 8mm hex screws. You can see the large wiring connectors attached to it. Since you have to remove the battery, it takes about 10 minutes to remove it at the most.
Larry
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Larry Carlson
www.TCParts.com928-386-0999
TCA #1975