The chasis is the ground. There is no wire.
The red wire is the hot wire. The black wire is the ground wire. The green wire is the speaker wire. The white wire is the auxiliary wire.
Gray Connector wire color-strip color dk blu mute bla-lt grn ground lt blu-red panel illumination yel-blk radio power feed bla vehicle chassis ground lt grn-p memory feed Black connector wire color-strip color orng-red rt rear speaker feed brn-pk rt rear speaker ground dk grn-orng rt fr speaker feed wh-lt grn rt fr speaker ground gry-lt blu L rear speaker feed tan-yel L rear speaker ground lt blu-wh L fr speaker feed orng-lt grn L fr speaker ground
everything,red usually is power, black return, green ground then all you need is a schematic.
There is no ground for any of the speakers in a car. You will find to wires that go to the speaker but NEVER have the speaker wires touch any body metal. If you tie any of the speaker wires to ground you will short out the amplifier in the radio. On Ford vehicles the radio outputs are what they call Bridged Tied Loads. The speaker wires are not referenced to ground or battery. If you wish to find out the phasing of the speaker just put a 9 volt battery across the speaker wires and the speaker cone will either advance or retrack. Do this to all the speakers and note what color wir was on the 9 volt battery terminal
Right Front Speaker (+) Green Left Front Speaker (+) Pink +12 Volt Ignition Wire Gray +12 Volt Battery Wire Blue w/yellow stripe Right Front Speaker (-) Blue Left Front Speaker (-) Purple Ground Wire Black Right Rear Speaker (+) Red Left Rear Speaker (+) Black Right Rear Speaker (-) White Left Rear Speaker (-) Yellow the ground(black) is on the bigger harness
Green with a white line
The stereo wiring color code for a 1991 to 1995 Toyota Tercel is as follows: the right front speaker (+) is green. The left front speaker wire (+) is pink. The 12v+ ignition wire is gray and the 12v+ battery wire is blue with a yellow stripe. The right front speaker wire (-) is blue, and the left front speaker (-) is purple. The ground wire is black. The right rear speaker wire (+) is red, the left rear speaker (+) is black, the right rear speaker (-) is white, and the left rear speaker (-) is yellow.
The color of the sensor is black and is location is behind the trasmision
probably connected to the two rear speakers. could be wrong To expound on the smart alec response from previous user; on a 2003 Mitsubishi Galant GTZ the rear deck speakers (6 X 9) wiring are a pair of wires Yellow and Grey (with a leading color indicator. The rear deck driver side speaker is grey w/blue stripe and yellow w/blue stripe. See below: Left Rear Speaker Positive Wire (+): Yellow/Blue Left Rear Speaker Negative Wire (-): Gray/Blue Right Rear Speaker Positive Wire (+): Yellow/Red Right Rear Speaker Negative Wire (-): Gray/Red
The speaker wires on a 2005 Avalanche are white. Most automobile manufacturers use white wires for the speaker wires. After market speaker wires are usually red or blue in color.
Here is a description of the factory dash board stereo connectors for a four speaker 1995 Ford Ranger. A 1997 shouldn't be too different. I hope it helps: Ford Wiring Harness Speaker Connector (Black) Color / Stripe 1.) Orange / Red = Right Rear Speaker Feed (+) 2.) Brown / Pink = Right Rear Speaker Ground (-) 3.) Dark Green / Orange = Right Front Speaker Ground (-) 4.) White / Light Green = Right Front Speaker Feed (+) 5.) Grey / Light Blue = Left Rear Speaker Feed (+) 6.) Tan / Yellow = Left Rear Speaker Ground (-) 7.) Light Blue / White = Left Front Speaker Ground (-) 8.) Orange / Light Green = Left Front Speaker Feed (+) Ford Wiring Harness Stereo Connector (Grey) Color / Stripe 1.) Dark Blue = Mute (Optional) 2.) ------------ = No Wire 3.) Black / Light Green = Radio Ground (-) 4.) ------------ = No Wire 5.) Light Blue / Red = Panel Illumination (Dimmer) 6.) Yellow / Black = Radio Power Feed (Ignition/Switched)(12V+) 7.) Black = Vehicle Chassis Ground (-) 8.) Light Green / Purple = Memory Feed (constant power)(12V+)
Speaker cable can have an insulator that could be any color. The wire inside is typically silver, copper or gold colored.