3.4S/3.8S, For Cars Converted to Negative Ground. 21 Pieces. Sample shown in photo; actual kit may vary. This kit will not show as being in stock but no worries; it is assembled from individual pieces when ordered. Many owners of classic Jaguars find the dashboard lights dim and the instruments difficult to read at night. WeÕve matched up the various Lucas bulbs with super bright LED counterparts to solve the issue completely. These kits include bulbs for the instruments, panel lights, warning lights and interior lights. Because LEDs are polarity sensitive, please take note if your positive ground XK, Early Sedan or 3.8 E-Type has been converted to negative ground.