It depends on your engine set up. What size engine do you have? What is the 5th letter in the VIN #? Most likely one is for the fuel pump and the other is the fan relay.
67 RS Camaro 327/ 350 Holley 650cfm > Edelbrock Performer Intake > Pertronix Ignition > Accel Super Stock Coil and Wires > Hedman Hedders > Hotchkis Performance Springs > 15" Rallys all around
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Camaro buds until the end!!!