Indeed, I can’t see the con-rods going before the valves (non-interference) and push-rods. Pistons should be alright too.

The benefit of an older Landy is you won’t be breaking many speed limits!

Glad it’s sorted, told ya to check the side repeaters 😛

Just need the one relay, it should be behind the main fuse board. It might be correct, definitely worth noting what’s there though. It’s strange how its worked fine all these years - but that’s Land Rover electrics for you! Remember, you ought to have the indicator tell-tale lamp working for MoT...

You may still need an led-specific relay, I think the ‘plug-and-play’ just means the wiring plugs are fitted for you. I could be completely wrong though!

Why aren’t the choke (serves as glow plug light on diesels) and diff lock lights used?

Is the bulb-holder missing too? There might be an unused one on the light board, although Land Rover were a bit frugal and usually didn’t put any “spares” in!

Plug those green wires in and see what happens. You may find that the indicators stop working if you do. Let us know the outcome!

They should be plugged into the indicator 🔛 bulb on the dash light board.

Can’t remember if you have or not, but have you measured what voltage you were getting at the indicators when they were on?

No worries.

Do they work properly with the l/h indicator switch engaged?

The bolt (set screw) is just an M6x16mm bolt (set screw). Aftermarket offerings are predominantly flanged bolts (set screws!), but the original set-up had the thick washer. Doesn’t matter either way.

Ah right, the bolt is : FS106161L and the washer is : FRC886

I’ll guess it’s not a special bolt, is it off a Td5?

Have you inspected the l/h side-repeater? Was this also changed to led?

Worth checking the side repeater too, they’re prone to internal corrosion.

NS wing indicator wire - told ya! Will blow when left turn is activated, it can also blow when wet. I can’t remember off the top of my head, but I think it’s a green wire you’re looking for (check the wiring diagram). It’ll be chafed along the length somewhere (probably about halfway between...

Ok, as @miktdish suggested earlier it sounds like you have a live short to earth, maybe a chafed wire behind the dash somewhere. The indicator wire (especially NS inner wing) are especially prone to this, but this wire is only live when the indicator switch is on, so you’ll need to be looking at...

Does the fuse blow when you use the indicator?