Fix : Xenon Headlamp with new Ballast levels up instead of down - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #1 of 1 Old 3 Weeks Ago Thread Starter
Status: Hacker and fixer
AO Member
Join Date: May 2016
County: -
Posts: 17
Lightbulb Fix : Xenon Headlamp with new Ballast levels up instead of down

Okay - I've posted this elsewhere, but it might be worth its' own thread, as the alfa-specific xenon ballasts become harder to find

Removing the bumper, and headlamp unit to replace the ballast have been covered enough times - however one thing that's not covered is fixing it when the self-leveling and initialisation aim the wrong direction (up, not down!)

Remove the lamp and open the rear of the xenon side (three screws)

Remove the igniter connector on the rear of the bulb and look for this plug :

Pop the plug - and observe the order of the wires
These control the stepper motor in the lamp unit. A simple, interesting feature of stepper motors is that you only have to swap one pair to reverse the direction, in this case the pairs are red/brown and blue/black.

Using a jeweler's screwdriver, pop the cover on the plug

Push gently on the tabs for the wires you want to swap, and pull them out - you'll need to do it twice per wire as it 'snags' ... once out, simply pop them into the reversed positions
(In this case I swapped black and blue around)

Reassembly is, in the tradition of the Haynes bibles, the reverse of disassembly.

Power on, and marvel as your headlamp now levels in the correct direction
Attached Images
File Type: jpg File_001.jpg (67.6 KB, 0 views)
proinsias is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

ballast , fix , headlamp , levels , xenon

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome