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YOUR RESEARCHInstalling Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Replace also
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Performed · outcome unconfirmed
One day (one day!) I'll have the old unit changed also.
Installing Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Replace also' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect amp plug and fiber optic cable' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Performed · outcome unconfirmed · Original poster
I ran my wires to that connector and hid them behind the cover that goes around the brake booster
Installing Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Disconnect amp plug and fiber optic cable
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Installing Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use 10mm socket
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Installing Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use becker radio removal tools
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Suggestion · Original poster
Move to the inside of the car and use becker radio removal tools.
Installing Continental Radio into a 2003 Boxster S with Most Bus - DIY - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I purchased the Continental Radio TR7412UB-OR from
http://www.bergvillfx.com
I purchased the Alpine KTP - 445U Amp / Harness from
https://cai-store.com/
Tools
• Safety Glasses
• Philips screw driver
• Metric socket set
• 10 mm wrench
• Torex screw driver
• Crimps / Crimping Tool
• Radio Removal tools
Components
• Continental Radio TR7412UB-0R
• Wiring Harness
• Amp – Alpine KTP – 445U
Start by Disconnecting and removing your battery with a 10 mm wrench then a 13 mm socket to remove the battery hold-down.
Use a 10mm socket to remove the amplifier mount.
Disconnect the amp plug and fiber optic cable.
Remove the trim that surrounds the brake fluid reservoir. Reroute the speaker wires to the right side of the brake reservoir.
Separate the carpet along the top edge of the trunk to reveal the grommet leading from the battery compartment to the trunk.
Move to the inside of the car and use becker radio removal tools. Remove the factory radio.
Remove the trim for the Air con unit and then remove the top screws that hold the unit in. remove the air con unit.
Remove the mounting bracket from the continental radio and install into the radio socket in the car.
Slide the harness through the opening and route the trunk end of the cable into the driver foot well.
Connect the harness to the Amp, Slide the amp to the back of the radio cavity.
Connect the Orange labeled (Illumination) wire to the cigarette lighter (grey with blue wire)
Connect the harness to the new radio, following
Route the Red (Accessory power) labeled wire into the driver foot well.
Slide the continental radio into its mounting bracket being careful not to pinch any wires. Reinstall Air Con unit and trim.
Proceed to the front trunk.
Look just to the right of where the battery was you will see a rubber grommet, use a knife and slice a small X into the grommet. Stick a screw driver into the the
hole.
From the foot well slide the end of the covered wire through the grommet. While you are under the dash remove the air duct tubing and remove the ignition switch so you can splice the
labeled red wire with the orange wire in the ignition switch.
Move to the front trunk again and run the wires in front of where the battery goes you will notice another grommet leading from the battery area to the front trunk.
Slice a x in the grommet and route the cabling to the right side of the brake reservoir.
Speaker wire to Harness connections
Connect to cable with no blue stripe
Right Dash
Red – Positive Connect to Red from harness
Red / Brown – Negative Connect to Black from harness
Left Dash
Yellow – Positive Connect to White from harness
Yellow / Brown – Negative Connect to Green from harness
Connect to cable with one blue stripe
Right Door Speaker
Purple – Positive Connect to Red from harness with blue stripe
Purple / Brown – Negative Connect to Black from harness with blue stripe
Left Door Speaker
Green – Positive Connect to White from harness with blue stripe
Green / Brown – Negative Connect to Green from harness with blue stripe
Done
Great Write up Fintro!!! Thanks for taking the time to put this together and record your process.
This should be a sticky in the DIY section!
Hopefully, Luccia can resize the pictures to be a bit smaller.
How do the existing speakers sound with the New Alpine Amp? Was this a BOSE system and did it have a rear deck speakers?
Thanks
Al
This is brilliant, some nice details in there Martin. Great write-up!
One day (one day!) I'll have the old unit changed also. Let us know how this Alpine amp worked out with the oem speakers bud (sound/punch wise). Thx!
Hoping I can get help from a fairly old thread.
How does one relocate the wires? On mine, which has the dreaded MOST system, the brake booster has the wires trapped in a very narrow space and the connector is too big to pass behind. Also, the wires are kept in place by two cable management loops behind the housing. Can I take loose the booster housing without impacting the brake system?
