Before you send this, try the swap test
It is the single fastest way for us to work out which part has actually failed, and it
sorts most claims without any back and forth. No special knowledge needed, it is just
unplugging and swapping.
Swap the parts from the working side over to the faulty side, one at a time,
and see if the fault moves with them.
- Fault moves to the other side = the part you swapped is the faulty one.
- Fault stays put = the light itself is the faulty one.
Keep in mind each side is usually more than one part. On headlights that can be the
headlight, the H4 adapter, the vehicle specific adapter, the CANBUS or EMC module and
the Bluetooth controller. Tail lights, whips and light bars are the same idea, just swap
left and right. For rock lights and pod lights, unplug them one at a time, since a single
faulty light can stop the whole string working.
