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[Rustyrestorations]

I meant to say that I have made up three extras sets of canvas strips from the surplus webbing if anyone wants a pair?

I’d definitely be interested... I’ll drop you a DM....

[Betsy1969]

Made up and tested a hazard light test rig to test my simple circuit. Good news is that it worked fine   Is there any reason why I shouldn’t replicate this on the real thing ?

[Herald1360]

Won't the right/left split circuit need either a couple of diodes or another relay to avoid just paralleling up both sides?

[Wittsend]

Made up and tested a hazard light test rig to test my simple circuit. Good news is that it worked fine   Is there any reason why I shouldn’t replicate this on the real thing ?

Normally, if you activate the hazards they'll be running for some time.

Perhaps an over-night test just to test the endurance of your system/circuit.


 

[gilbo]

Won't the right/left split circuit need either a couple of diodes or another relay to avoid just paralleling up both sides?

Yes. I would say so.
Also I don't see any warning lamp?
 

There is a simpler way to do this anyway using a double pole switch - there was a circuit on here a few days back from someone else which was pretty much how I wired mine many years ago. No electronics required (well unless the extra flasher unit is!).
Edited to add - there you go!

https://www.series2club.co.uk/new_forum/index.php/topic,6890.0.html

[Betsy1969]

Gilbo - The warning light is in the switch

[MikeT]

Threaded some 3/16 stainless to make new accelerator rods 

[Betsy1969]

Won't the right/left split circuit need either a couple of diodes or another relay to avoid just paralleling up both sides?

I’m not quite sure what you mean . Are you saying that because left and right would be going through the same connection on the switch that under normal indicator operation it would “ come back “ to the hazard switch and flash all four ?

Andy

[gilbo]

Gilbo - The warning light is in the switch

I don't see a switch in your circuit (and therefore no worning lamp)
I assume then that it switches the relay - but I don't see why you have a relay unless the switch is not rated to carry enough current for the lamps.
Anyway, as drawn your circuit won't work correctly when installed in the vehicle. Any operation of the indicators will flash all four.
HTH

[Betsy1969]

I don't see a switch in your circuit (and therefore no worning lamp)
I assume then that it switches the relay - but I don't see why you have a relay unless the switch is not rated to carry enough current for the lamps.
Anyway, as drawn your circuit won't work correctly when installed in the vehicle. Any operation of the indicators will flash all four.
HTH

Sorry , my diagram isn’t very clear but the switch is the square thing to the right with one connection labelled Earth . I think I see your point now though , all four will flash when I indicate .
Time for a re-think

[Betsy1969]

As I want to keep the period looking switch with built-in warning lamp I’ve decided to go for 2 diodes which are now ordered . Let’s see if it works.

Thanks to Herald1360 , gilbo and Wittsend for your help and suggestions

Andy

[GRMac]

Yesterday but a 230 mile round trip to a funeral, an otherwise bad day made bright by going in the Land Rover.

[TimV]

Speedo has started waving the needle in that 30-50 band. Simple I thought, sparing bit of grease will sort that. Unfortunately, looks like the inner is non removable, as no matter how much I tug it, it won't slide out. Only been on nine years. Dripped a bit of oil and some solvent down it, but looks like a new cable needed.

[Gres]

A trip out for wood fired pizza collection!

[Herald1360]

As I want to keep the period looking switch with built-in warning lamp I’ve decided to go for 2 diodes which are now ordered . Let’s see if it works.

Thanks to Herald1360 , gilbo and Wittsend for your help and suggestions

Andy

They'll need to be quite beefy diodes- the running current of two 21W indicators is around 3.5A and the initial inrush current can be ten times that with repetitive surges as they flash of around 7A or so. I'd suggest using a small 35A bridge such as KBPC3504 which is only a few pounds and comes with benefits like single bolt mounting and 0.25" spade terminals. Probably total overkill but should be bombproof!

For a negative earth car, take the hazard flash feed to the -ve bridge output terminal and the left and right flasher links to the AC bridge terminals, leave the +ve bridge terminal open circuit (insulate it if there's any chance of an unwanted contact to it). Positive earth car, hazard flash feed to the +ve bridge output terminal.....