The Famous Bolt On Bits RDX LED Fix Kit now available on ebay.
The issue mainly effects older cars like the 200Tdi & 300Tdi after upgrading your indicators to LED (ours and others), when you indicate left the right side also glows (usually not at full brightness) and same when you indicate right the left side also comes on.
Generally this is caused by an earth leakage somewhere in the system, we have developed this simple fix to save you the hassle of locating the leak. If you remove your dashboard indicator signal light (not the trailer light) and it fixes the problem then this kit will sort out that fault.
Take your dashboard indicator signal light out and replace this with our signal light give it a good earth (use an instrument earth point), issue solved.
This will not be needed on Td5 Tdci or Puma as their Indicator systems are already isolated