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Discussion Starter #1
I have a strange electrical situation with my 1989 Rangie and I'm hoping someone here may have had a similar issue, although it's seeming rather bizarre to me.
The headlights work, but the tail and park lights have stopped working, strangely, so have the rear fog lights.

There is power at the switch, 12.54V distributed as it should be by moving the switch to each selection, but there is only 0.6V at the fuses and bupkis at the sockets.*
The reading at the fuses does not appear to be an aberration, because both read the same value and that reading drops to zero when ignition is switched off.*
The rear fogs have full power at the switch and the fuse, but again nothing at the sockets.

I would be grateful for any constructive suggestions or advice.
 

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Measure voltage against earth on the red and blue wires in C200 white 4 pin connector(attached) with side/fog lamps switched on, if you get 12V your problem might be in the fusebox ar at it's connectors
 

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Discussion Starter #3
G'day sierrafery, thanks for responding.
I'll give that a try, I've been trying to avoid the rat nest in behind the fascias?

Just so I have it right, if those wires show 12v with the parkers on, then the problem is most likely further downstream?
One thing I didn't mention, the park light bulbs have been going black for a couple of years, which I was told is a poor earth connection, but the tail lights are clear and do not display this. If it was the case, wouldn't every bulb on that circuit display the blackening?
 

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Just so I have it right, if those wires show 12v with the parkers on, then the problem is most likely further downstream?
I think so cos on the brown'purple wire the feed goes up into the switch then on the red and blue the feed is coming out from the switch for rear fogs and side lamps... after that connector the feed goes directly into the fusebox and splits within it between the side lights and fogs so if you have feed there but not on the fuses then IMO the best would be to swap the fusebox with a known good one to rule it out before you start chasing wiring issues which can be a nightmare
 

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Discussion Starter #5
Thanks for being the one willing to help sierrafery.?
Turns out the solution was embarrassingly simple.
When installing the original switch with an aftermarket one, for some reason I neglected to solder one connection and had just twisted it together and it had come apart but not pulled out of the installation tape.
All good on that front, now I can go mad trying to work out why my airlocker compressor is blowing fuses.
Old Landies are a hobby tinkerer's dream?
 
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