Fitting a stereo in a 1993 Nissan Sentra

ASK nISSAN DEALER THIS ?
Only they make the rules now, for sure with security rules. and locks.

https://www.modifiedlife.com/2006-nissan-sentra-car-stereo-wiring-guide/

Compare the numbers on the side of each tyre. They will look something like 175/70 R14 84T. As long as these numbers match the tyre will fit.
It is the rim that causes most fitting problems.

Here's a link to the lower ball joint,it tells you about a fitting to be greased,as you see the ball joint has a hole at threads where greasing fitting will be.It will be best to jack up and remove tire to grease,look for other grease fittings,wipe up excess grease.Also check ball joint for wear,may need replacing.

for me i advice to you, but sonny explode,den they have a fit speaker to all panel, and for the sub u want, their is a cheap speaker name TARGA, and amplifiers cheap also, V12 is the model.. if you are near in manila, i can help u to setup your sound, bec, im a sound technician.. just txt me if u wannt 09397527921.. im mark..

pls let me know the unit of torque to tightened the cylinder head of engine model nissan QR20DE

it will be a 134a port and located in the low side of the compressor. You will need to just follow the lines with your eye and look for a T or fitting
should have a black cap on it

I have the same car...04 nissan sentra....with the exact same problem....left side speakers just quit working. I still do not know what caused the problem, or how to fix it. I know it not the wiring, it is a defect within the stereo.

1995 Nissan Sentra Car Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Blue
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red/Blue
Car Stereo Dimmer Wire: Red/Yellow
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Blue
Right Front Speaker Positive Wire (+): White
Right Front Speaker Negative Wire (-): Black
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Light Green
Left Rear Speaker Negative Wire (-): Violet
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Pink

HI, To know exactly the tipe of refrigerant you have.
You need a machine to recover and identified.

But if you want to know the tipe of fitting you have
Only are 2 on cars.
R-12 the fitting look like bolt with thread outside.
the service hose go in threaded. to connect
R-134 they are fitting called quick connector.
Because you put making a litle pressure.on it to connect.
They don't show thread.

If your car is made after the six month of 1993. is R-134
if yor car is made before the six month of 1993 is R-12