Install Of Aftermarket Techometer In 1990 Subaru Legacy Sedan

Question edited into English :>D

2004 Subaru Impreza Car Radio Wiring Guide - MODIFIEDLIFE

https://www.modifiedlife.com > 2004-subaru-impreza-c...
Feel free to use any car stereo wiring diagram or factory radio wire colors that are listed on Modified Life but keep in mind that all information here is ...

Radio Wiring Diagram for a 2004 Subaru Impreza Wagon - Fixya

https://www.fixya.com > Forum > Car Audio & Video
Nov 15, 2019 - ... 2007 Subaru Impreza Car Stereo Wiring Diagram. Car Radio Battery Constant 12v+ Wire: Blue/Red Car Radio Accessory Switched 12v+ Wire: Yellow/Green
SOLVED: I need the wiring diagram for a 2004 Subaru - Fixya
Nov 15, 2019
Need 2005 subaru impreza stereo wiring harness diagram
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Subaru Impreza WRX 1993-2007 Car Stereo pinout

https://pinoutguide.com > ... > Subaru Impreza pinouts
Dec 9, 2019 - Pin #. Function. WRX Factory Radio Connector Wire Color ( wires go to WRX's Speakers, etc.) Subaru After-Market Harness Wire Color

How To Subaru WRX Stereo Wiring Diagram - My Pro Street

https://my.prostreetonline.com > 2016/02/15 > how-to-s...
Feb 15, 2016 - Use our WRX Stereo Wiring schematic to complete your aftermarket stereo install into your Subaru Impreza WRX or STI.

as cars run DC power the polarity doesn't matter in a solenoid unit such as door lock if it has 2 wires ( power wire and earth wire ) Just reverse the wiring and it should work

As in?

Power Window Circuit Breaker: LH Rocker Panel, Near Front Seat
Power Window Relay: LH Rocker Panel, Near Front Seat

perhaps you should 've checked the spark plug wire spark plug itself and the wiring going to the coil,there some many things that can cause a particular coil not to work.

the wires with black stripes are the minus the ones with red stripes are plus

did u know that they make a harness for your car that plugs into your factory harness and then adapts to your aftermarket radio? for the lights, you have blown the interior light fuse, it may be the same fuse as the cigar lighter.Below is your radio wire colors and what they do.
1990 Toyota Corolla Car Stereo Radio Wiring Diagram.
Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Purple
Right Front Speaker Wire (-): Light Green
Rear Speakers Size: 4′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White
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which transmission does the car have? this could be a bad transfer case in the transmission or a damaged axle

Both head gaskets have to be replaced and the heads need to be resurfaced, be sure you go thru the torque specs and sequence correctly, it is a strange process, but has to be done. subaru puts out a product called cooling system conditioner, it's advised to install this.