I need to no the wire locatoins on a pioneer ts-lx100 8 pin plug for the power and ground and acc.

Here is the wire pinout for the power plug of the Pioneer AVH-P2300 car stereo:

1. Yellow: Constant 12V (Battery)
2. Red: Ignition 12V (Accessory)
3. Black: Ground
4. Blue: Power Antenna Control
5. White: Front Left Speaker (+)
6. White/Black: Front Left Speaker (-)
7. Gray: Front Right Speaker (+)
8. Gray/Black: Front Right Speaker (-)
9. Green: Rear Left Speaker (+)
10. Green/Black: Rear Left Speaker (-)
11. Purple: Rear Right Speaker (+)
12. Purple/Black: Rear Right Speaker (-)

GM is just and AMP (lifier)
Pioneers web site , does not support it, is it OLD?
yes it is old, 4 channel AMP:
35watts x4
4 to 8 ohms only speakers, x4
the rear has custom power jack connnector
is the pig tail for that lost?
it is older than 2010 for sure, reading blogs etc.
found old sales ad. 1995, so is old old old amp.
before digital books so super super hard to search.
12 pin connector one guy said

"found out the 12 pin plug here's how it is
top AL+ AR+ NC BIN BR+ BL+
BOTTOM AL- AR- GND ACC BR- BR-"
R= right
L=LEFT
my wild guess is gnd is ground abd ACC is 12vdc accessory power

lost this part?

conn + pig tail? the big red is 12v and next to it is ground

I would recommend you purchase a new harness. Connecting a wire to the individual pins and then insuring that none of the leads touch another is difficult at beat. Replacement power/speaker harnesses are only $7 to 10. A simple google search showed several vendors.

sounds like yours acc (red wire) is not connected

You can splice one wire at a time instead of cutting them all at once. Just cut one wire, splice the same wire from the old connecter to the new one. You can identify which pin is which by using a multimeter to find 12 volts and use it set to continuity to see what pin is connected to the wire you just cut.

Theyre 3 wires, power, memory and ground, all 3 must be connected to maintain power on the radio!!

Download manual from Pioneer website. Yellow is b+, red is acc, black is chassi ground. Green, brown ,gray and white wires are color paired for speakers. Blue wire is amp remote turn on .Hope this helps

red -Acc power
yellow -12 memory power
black -ground
blue -amplifier remote
blue/white -power antenna
SPEAKERS
white left front +
white/black left front -
grey right front +
grey/black right front -
green left rear +
green/black left rear
purple right rear +
purple/black right rear -

red -Acc power
yellow -12 memory power
black -ground
blue -amplifier remote
blue/white -power antenna
SPEAKERS
white left front +
white/black left front -
grey right front +
grey/black right front -
green left rear +
green/black left rear
purple right rear +
purple/black right rear -

hi,

red to ignition of the car

yellow to positive terminal of battery

black to neg. terminal of batt.

the rest of wires to speakers (4)