Noob Question. How to know what wires are + - in car doors

[YukonDCXL]

Sorry if this has been asked or answered, I just joined today and I am still trying to learn the site. I am putting aftermarket door speaker in my 07 Yukon but I am not sure which wires are + or - coming out of the doors and the speaker I took out are so blown that I can not get them to jump with a battery to see that way. any advise?

[k3n12ock]

Edit: 07 Yukon

1 second

Radio 12v red/white + radio harness
Radio Ground black - radio harness
Radio Ignition (GMLAN Serial Data)
Radio Illumination yellow (dimmer) + radio harness
Factory Amp Turn-on same as power antenna wire
Power Antenna white + radio harness
LF Speaker +/- tan - gray +,- radio harness or amplifier
RF Speaker +/- lt. green - dk. green +,- radio harness or amplifier
LR Speaker +/- brown - yellow +,- radio harness or amplifier
RR Speaker +/- dk. blue - lt. blue +,- radio harness or amplifier

[YukonDCXL]

Just so I got it right... RF + is Lt. green and - is dk. green? Thanks for the help

[YukonDCXL]

Sorry I was looking at that wrong. RF lt. green is - and dk. green +. So I have it hooked up wrong but they seem to sound fine? and when I was hooking it up I switched them back and forth trying to tell that way and i could not here a difference.

[YukonDCXL]

I hooked up all doors opposite to that but it seems to sound fine.

[Tribe Called Bass]

If you know which wires where connected on the terminal, the bigger connector tab is positive because it takes in power, the smaller connector tab is negative because it''s only grounding it.