No, you are correct. To get the lights to come on when you turn your parking or headlights on, you just have to use a tester and test to find which wire is hot when you turn your headlight switch on. Then. You also need a wire to go into your ignition switch wire. That will only send power to the gauge when the ignition switch is in the "ON" position. I believe there is a drawing of that wire on the diagram that came with your guages. I don't know if you can get them to dim when you dim your other lights...i really wouldn't worry about that. Other than those two wires...all you have is a wire that you have to ground and then that's that.
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'89 GT, T-5,
Bored .030 Over, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Keith Black hyp. flat top Pistons, Screamin' Deamon Coil, Champion Plugs, March Underdrive Pulleys, 255lph Fuel Pump, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears.
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