Is this on a Tithonus with the large military switch in the console on the dash ?
The military light switch has various functions and some of them disconnect the horn as well.
This is what the military light swicth does.
OFF: All lights are off.
CONV: Convoy light only.
SCONV: Convoy and side lights.
T: Tail and rear number plate lights.
ST: Side, tail and rear number plate lights.
HST: Head, side, tail and rear number plate lights.
As for your indicators check the fuses first a very simple thing to check but easily over looked.
If the fuses are ok turn the indicators on and rotate the military light switch to all positions to see if it works IIRC with the convoy on the indicators are disconnected so will not work so preventing accidental opperation.
If still no luck treat it like a normal series III and check the indicator stalk is working properly and the indicator relay.
If that does nothing check the bulbs and earths.
If that does not work you could have a damaged loom or faulty military light switch.
The Tithonus wiring is different from the Defender models.
You can also pull the dash, take out the military wiring switch and replace it with a std Defender light switch on the column.
Originally Posted by spammer
When I bought my truck a couple of weeks ago everything worked beautifully. Headlights, flashers, brights, and blinkers all worked.
A few weeks later and here are my problems:
1. Left headlight stopped working. Swapped front left and right headlights and still nothing to the left headlight. Brights worked fine, so I drove with brights on at night.
2. Around the same time blinkers went out. Hazards worked, but blinkers didn't. No power to the blinker fuses.
3. Then I sprayed some wd40 into the military headlight switch and both headlights worked! So switch must be the problem.
4. One day later, I'm back to only right headlight working. And now, as an added bonus, only the left high beam is working. It looks like I'm getting power to all the headlight and high beam fuses on both sides of the fuses.
I've read that hazard switches or relays can cause the blinker problems and those parts are cheap so I'm going to order both.
I tested behind the headlight that wasn't working and it was getting a low volt signal (2-3v or something).
Anything I should look for? Could it be the blinker switch on the steering column which is giving me grief since I'm having blinker and high beam issues?