Hazards work, but no indicators. Early Grifith

[Belle427]

PreCat Griffith said:

Should there be an ignition switched live up at the indicator switch i.e. the LG/N wire that is up at the stalk, should that become a permanent supply when ignition is on, and then operating the indicator stalk makes a connection between the live LG/N and either the G/R or G/N?

Should I expect my test lamp to find a supply at the stalk on LG/N with ignition on, even if switch is in middle neutral position?

Thats how i assumed it worked, terminal 49a when connected to the load starts the flash.
Hazards work so this suggests there is an output at 49a working ok which gets connected by relay 16 terminals 87.
Seems to suggest something amiss after the indicator switch itself but this is odd, connecting a test lamp to terminal 49a should make the flasher operate but im not 100% sure on that tbh.

[PreCat Griffith]

You can disregard that diagram from earlier; my early Griff is wired differently. There are indeed 2 relays and a flasher, but each indicator seems to have it's own relay.

I'm focusing on the diode now and doing research of old threads on here. Thanks for planting the seed a few posts back.

[Belle427]

Im really not sure what purpose it serves tbh, i will do some more research in the morning and try and look through some old threads.

[RobXjcoupe]

Just thinking if you have an earlier wiring loom, would that be more akin to the equivalent year Range Rover? Possibly look at the indicator circuits from that car?

[Belle427]

I can only advise to test it with the multimeter, it will only pass current in one direction.
If it fails the test replace it to eliminate it.
I did read you could link it out for the purpose of testing the indicators only but can't really advise you to try this.

[Adrian@]

Looking at a wiring diagram for a 92 Griff with this rist board I am seeing that the Hazards are running twin relays.



The fuse for the indicator is number 5 (follows on from the main 92 diagram that is everywhere)



and the blue/white-doide-blue/red diode is unrelated to the indicators.

(I can see where the diodes in the system may come from here on a 96 car diagram where heated seats are added to the rist board)



A@

[PreCat Griffith]

Ah thank you; yes this is the wiring I have!

Shame that diode is not the one then. Does another exist that I should be looking for?

At my indicator stalk switch, I have the LG/N, and the 2 indicator wires G/W and G/R. Am I supposed to have supply to the LG/N with ignition on (and then I make the circuit with the G/W or G/R when throwing the switch?

If I start experimenting with a test live feed to things, do I risk blowing anything worse than a fuse?

[PreCat Griffith]

I take it these hazard relays are not used in the indicator circuit though, because it's not possible to isolate either side from the look of the wiring in those relays; if you energise the NB and operate the switch, it will always operate both relay switches.

[Adrian@]

I have pulled back on that picture to beyond block D 85i beyond (on the main 92 diagram) is another diode, BUT LGN via fuse 5 and block E 87la has a double connection at the switch (I presume at the connector block on the column). A@

[Belle427]

Im no expert on flasher units but if you were to rig up a 21 watt test lamp, ground one wire and connect the other to the LG/N terminal at the stalk the lamp should flash.
If it did it proves the circuit to the stalk is ok.
Happy to be corrected on that, not sure what kind of load the flasher unit expects.

[PreCat Griffith]

I did exactly this with ignition on, and I get nothing at the LG/N on the stalk. I still don't know if I'm expecting this LG/N at the stalk to be live with ignition on? I'm tempted to start feeding a temporary test 12v straight off the battery to these wires at the stalk and see what happens.

When I turn the hazard switch on, my test light will flash in time with the indicators when touched on any of the wires at the stalk (LG/N, BR and BW).

If all else fails I might just tap in a new igntion switched 12v feed to the LG/N at the stalk.

[Belle427]

That wont work as the indicators would just remain on all the time, im stumped now tbh but not having a good working diagram is not helping really.

[PreCat Griffith]

They wouldn't remain on with the switch in the middle neutral open position, surely? I'll have to test this when it's not so bloody cold in the garage. :-)

[Belle427]

PreCat Griffith said:

They wouldn't remain on with the switch in the middle neutral open position, surely? I'll have to test this when it's not so bloody cold in the garage. :-)

Thats correct, i was assuming you were going to leave it like this though.
Ignore me if thats not the case!

[PreCat Griffith]

I'll update when the world warms up a bit.

[PreCat Griffith]

With ignition on, if I put a live straight from the battery onto the LG/N terminal at the switch, the switch will activate the indicators when thrown, but on solid (not flashing).

I think I'm just going to buy a flasher unit and wire it up like the below. I know it's a botch, but I'm at a loss now.

[Belle427]

Maybe the indicator wiring also goes through the hazard switch which is my last stab in the dark really, can you access the wires on the hazard switch just to see how many are there?

[PreCat Griffith]

Just as an update, I took a feed off the remote switch at the radio and connected it to the power wire at the indicator stalk via a £2.60 flasher relay unit. A bodge I know, but at least the indicators work now (while sat in the garage anyway....yet to actually start it up and drive it).

[Belle427]

Just wish we could have seen an outcome to the problem!

[PreCat Griffith]

Agreed. Knowing where the feed to the indicator switch came from would have helped.