Meir:
You cannot just reverse the wiring into the stock light housing.
It would require modifying and cutting the metal traces, then soldering jumpers around to reverse engineer the light wiring.
Can be done, would be time consuming and would still work with bulbs if wanted to later.
Bulbs care less about polarity, whereas LED's do.
My aftermarket tail lights already corrected the polarity issue with their own circuit board that just plugs into the factory harness.
I paid $195.00 for the pair of tail lights. (Tuning Import)
97 98 99 00 01 02 03 04 Porsche Boxster 986 Euro Red LED Tail Light Lights Lamp | eBay
