Here is the audio stereo radio wiring information for your 1997 Land Rover Discovery with the amplified system. It will be useful when installing a stereo sound system, aftermarket headunit radio, or other automotive accessories. Make sure to grab the appropriate tools to test all the wires in your Discovery. Please check it over and use it as a GUIDE only to help you locate the appropriate wires. This schematic is provided free of charge and may not be 100% accurate. Failure to properly test all the wires may lead to vehicle or bodily damage. All information is provided as-is and accuracy is not guaranteed.
If you find any conflicting info please leave a comment with what you found in your 1997 Land Rover Discovery. If you don’t see the audio radio wiring diagram you need comment and we will try to add it ASAP. Thanks for looking!
1997 Land Rover Discovery Audio Wiring Radio Diagram Schematic Colors – Aftermarket Stereo DIY Installation Help
Car Radio Constant 12v+ Wire: Light Green/Orange @ Radio Harness
Car Stereo Ground Wire: Black @ Radio Harness
Car Radio Ignition Switched Wire: Purple @ Radio Harness
Car Radio Illumination Wire: Red/Brown (+) @ Radio Harness
Car Radio Dimmer Wire: N/A
Car Radio Amp Turn On Wire: Blue @ Radio Harness
Car Stereo Power Antenna: N/A
Reverse Trigger: N/A
Parking Brake E-Brake Trigger: N/A
These are the speaker wire colors found at the amp. The amp is located above the passenger kick panel or under the driver or passenger seat on some models.
Left Front Speaker Wire (+) Positive: Black/White
Left Front Speaker Wire (-) Negative: Black/Brown
Right Front Speaker Wire (+) Positive: Black/Pink
Right Front Speaker Wire (-) Negative: Black/Red
Left Rear Speaker Wire (+) Positive: Black/Yellow
Left Rear Speaker Wire (-) Negative: Black/Orange
Right Rear Speaker Wire (+) Positive: Black/Green
Right Rear Speaker Wire (-) Negative: Black/Blue
If installing an aftermarket radio you can try the Metra 70-9400 harness using only RCA outputs first. This usually results in quite a bit of engine noise in these vehicles. The best result is to bypass the amp. Locate the amp and extend your speaker wires from the radio to the amp. Using the speaker wiring above CUT the speaker wires in the vehicle and connect your new wires to the car side of the wires. If you don’t want to retain the OEM subs in the hatch you can just unplug the main amp connector and not worry about cutting the wires. If you want to retain the sub, you’ll need to cut them. After making all those connections tape up the cut ends on the amp plug and plug the connector back in. Now back at the radio be sure to plug the REAR rcas from the 70-9400 (green and purple) into your new radios sub RCA outputs. Don’t plug the white and gray RCAs into anything they won’t be used.
Subwoofer Speaker Wire Positive / Negative: N/A
Center Channel Speaker Wire Positive / Negative: N/A
Radio Size: Single DIN
Radio Removal Tools:
If you have the larger radio pictured above, you will need these radio removal tools:
If you have the smaller (lower) radio pictured above, you will need these radio removal tools:
REQUIRED PARTS FOR AFTERMARKET RADIO INSTALL
WIRING HARNESS
MOUNTING KIT FOR DOUBLE DIN AFTERMARKET RADIOS:
N/A
MOUNTING KIT FOR SINGLE DIN AFTERMARKET RADIOS:
Not needed for all vehicles see the pic above.
ANTENNA ADAPTER:
OEM AUX AUXILLIARY PORT RETENTION:
N/A
STEERING WHEEL CONTROL INTERFACE:
N/A
SPEAKER WIRING ADAPTERS FOR AFTERMARKET SPEAKER INSTALL:
N/A
SPEAKER MOUNTING ADAPTERS FOR AFTERMARKET SPEAKER INSTALL:
N/A
RECOMMENDED TOOLS FOR THE INSTALL – SAME ONES THE PROS USE!
– Klein Wire Cutters / Crimpers
– Dash Removal Plastic Pry Tools
plug either the aux or the rcas into the back of your new aftermarket radio depending on what type of audio input they have. Then cut off the other end and splice into the following wires at the 14-pin connector found behind the radio:
to easily get the job done.
they work great and are an excellent bang for the buck! Or the 
if you want to replace your OEM tweeters in the dash as well.
