Output testing at the door

[quik418]

Is there a way to determine which is the + wire at the door with a meter?

[tholmes]

What really fits in the dash of a 2005+ Frontier

maybe that will help.... dunno.

[zoomzoom]

it'll help if you provide specific year and RF system or not
Haven't looked at any of the stock speakers yet. Sometimes if you're lucky, there will be a terminal on the speaker marked with a +. Or sometimes you'll notice one of the 2 speaker terminals will be bigger than the other. I take this to be the positive wire.

for 2005
Radio 12v yellow + radio harness
Radio Ground (chassis)
Radio Ignition green/black + radio harness
Radio Illumination red + radio harness
Factory Amp Turn-on green/white + radio harness
Power Antenna N/A
LF Speaker +/- brown - blue +,- radio harness or amp under pass seat
RF Speaker +/- lt. green - red +,- radio harness or amp under pass seat
LR Speaker +/- green - black +,- radio harness or amp under pass seat
RR Speaker +/- gray - orange +,- radio harness or amp under pass seat

[x_mods]

I would just put the meter on 9v or 12v batt, ground the neg, and then see which wire shows voltage when music is playing?

[nothingasitseems]

Originally Posted by zoomzoom

it'll help if you provide specific year and RF system or not
Haven't looked at any of the stock speakers yet. Sometimes if you're lucky, there will be a terminal on the speaker marked with a +. Or sometimes you'll notice one of the 2 speaker terminals will be bigger than the other. I take this to be the positive wire.

for 2005
Radio 12v yellow + radio harness
Radio Ground (chassis)
Radio Ignition green/black + radio harness
Radio Illumination red + radio harness
Factory Amp Turn-on green/white + radio harness
Power Antenna N/A
LF Speaker +/- brown - blue +,- radio harness or amp under pass seat
RF Speaker +/- lt. green - red +,- radio harness or amp under pass seat
LR Speaker +/- green - black +,- radio harness or amp under pass seat
RR Speaker +/- gray - orange +,- radio harness or amp under pass seat

On my '06 non-RF system, front speakers didn't have any symbols on the harness or the speaker themselves......

[Cusser]

Originally Posted by quik418

Is there a way to determine which is the + wire at the door with a meter?

If I understand your question to deal with speaker wires inside the door, once you take the door panel off: the wire with the black stripe is the negative.

Of course, that is dependent upon the wires at the stereo being connected correctly !!!