Don't think Boxsters have bulb out warning lights.
You could either connect it as well so that the high beam bulb flashes when your dipped beams aren't on, or install a relay that switches to the bi-xenons when the dipped beams are on, and the separate bulbs when they're not.
I did the latter, but removed the relay afterwards as one of them failed on me - they were cheap Ebay relays mind!
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Porsche Boxster S Type 986
Bi-xenon Headlight Upgrade | 987 S 18" Anthracite Alloys | Android Head Unit | 5000k 55w HID's | 5000k Cree DRL's | 5000k Cree number plate lights | Cree LED Indicators | One-touch roof operation | Bypass exhaust pipes | Parking sensors | Ambient footwell lighting
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