The interior lights on my 1983 XJ6 work perfectly on all doors open EXCEPT for the driver’s door. I replaced the plunger from a working door, but no joy! If I run a wire from the purple/white wire from one of the other doors to the purple/white wire on the driver’s door, it will work. Therefore, there is connection problem with the driver’s purple/white wire. Where do I start?
First check that there is power on the driver’s (disconnected) door’s purple/white, Richard. Then ground the wire - light should come on; as it should via the opened door’s switch.
Circuit logic; the lamps themselves are powered door switches grounds them - not the other way around.
If grounding the wire works, but the switch does not; defective switch - clean?
The door switches are on a bus with a lot of wires - precise routing unknown; if the driver’s door switch wire is disconnected from the bus - disconnection may be difficult to find. Any other door activated functions that is not working?
If all the doors turn on the interior lights except for the driver’s door, could one if the two fuses be bad? I found one fuse in the main fuse box. Where would the other be?
Where does the purple/white wires from all the doors end up at? I seem to remember it is a junction box near the “A” pillar below the steering wheel (LHD).
Thanks Frank for reminding me the purple/white wire is really a ground!
Principally, the interior lamps are fed purple, Richard - and the lights’ ground is purple/white wire; starting at the interior light. But depending on equipment level purple/white may pass through ‘modifying’ components, like a delay relay.
There is no separate fuse specific to the driver’s door ground - the fuse is in the purple feed wire…
The main point is if there is power on the driver’s
door switch - test as advised…