Unfortunately I don't know how to replace the ballast without removing the headlight. When replacing a new part with an old one, be careful not to damage the cable. At first glance it may seem difficult to install the ballast and you may think this is the wrong part. You just need to be patient and tighten the three screws one by one to install the ballast evenly. The new ballast was installed about a month ago with no problems.
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