Re: How do I determine which wire does what for my front speaker? (have a multimeter)
Use the ohmmeter to measure across the wire pairs. If the wiring is typical there will be a capacitor crossover in series with the tweeters and the DMM will read open circuit (infinite) but the woofers will measure 2-4 ohms.
Get a helper. Then take a C or D cell battery and touch it to the wires while your helper listens to the speakers. There will be a 'click' noise from each speaker when you touch the battery.
1999 Buick Park Ave Ultra
Head Unit: JVC KWHDR720
EQ: Audiocontrol EQL
Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
Sub Stage: Boston G3 10", 0.5 cu ft sealed
Amp: PPI Phantom 900.4
Rear Fill: Boston SE953 6X9's