54 plate mk1 Focus. Built 03.
Electrical gremlin. Taillights work fine both sides. When brake pedal depressed the right side goes out completely - no brake light/taillight.
Have checked and changed bulbs, holders are fine. No loose wires at holders. No corrosion. Checked fuses - no issue. Restripped and crimped the joint earth In the boot. No change. Can’t see any damage to wires at top of boot lid.
Next I will change brake light switch (but it does switch the lights on (left/centre).
Any advice from anyone about what else it could potentially be?
I have a knackered abs sensor LR. Could that be potentially causing the issue?
Thanks.