Different Indicator fault

RobinR1 · Jun 3, 2020

My Cousin(full time served mechanic) & I are finishing off a rebuild of a Defender 90.
This lay in a field for 5 years then in a restorers for a further 3 years but now has a galvanised chassis & full respray
The Issue seems to be wiring. The horn doesn't seem to be getting any signal and the Indicators are always in Hazard mode! If you try the right or left Indictor then the whole lot come on & blink in Hazard mode.
We replaced the stalk, hazard switch and triple checked all the wiring!!!! Green and white is for one side & Green & red for the other but this is the second week that we've been bogged down trying to illiminate the problem.
Any advice would be welcome.
The Headlight were very dim and one wouldn't go into high beam so a new earth was tried & hey presto everything was back to normal but the indicators beggar belief!!!!
Thanks in advance
Robin

Hicap phill · Jun 4, 2020

Check earths behind the dash.
Check fuse for horn
Check relay for indicators

doriz · Jun 4, 2020

Hicap phill said:
Check earths behind the dash.
Check fuse for horn
Check relay for indicators

It's always an earth

nobber · Jun 4, 2020

With the indicators there is a slight current leak across the tell tale bulb, pull it out and see what happens.

RobinR1 · Jun 6, 2020

Horn sorted by replacing stalk & horn. Wiring okay. Switch replaced on stalk, hazard switch replaced and an extra earth installed at the front end. One week later and the indicators are still pulsing as if in Hazard mode!!!! The green & white cable one side and green & red down the other. All wiring seems to be fine but there are a few black wires loose behind the dash that we cant account for!!!!!
At wits end and had to walk away for another day!!!!!
Fed up looking at Hazard mode indicators

Robin

bluedog333 · Jun 6, 2020

RobinR1 said:
Horn sorted by replacing stalk & horn. Wiring okay. Switch replaced on stalk, hazard switch replaced and an extra earth installed at the front end. One week later and the indicators are still pulsing as if in Hazard mode!!!! The green & white cable one side and green & red down the other. All wiring seems to be fine but there are a few black wires loose behind the dash that we cant account for!!!!!
At wits end and had to walk away for another day!!!!!
Fed up looking at Hazard mode indicators

Robin

Replace the relay. At least just to eliminate it, they can cause problems.

Hicap phill · Jun 6, 2020

These are standard lights NOT leds?

RobinR1 · Jun 6, 2020

bluedog333 said:
Replace the relay. At least just to eliminate it, they can cause problems.

Already done that without success. Where is the blinker unit located. We have checked and cleared all the relays and can find the hazard no problem but the indicators seem to be relaying through the Hazard relay & it already was checked out!!!

RobinR1 · Jun 6, 2020

Hicap phill said:
These are standard lights NOT leds?

Standard 12V filament bulbs not LEDs as the owner wants it as if it just came out of the factory!!!

neilly · Jun 6, 2020

RobinR1 said:
Standard 12V filament bulbs not LEDs as the owner wants it as if it just came out of the factory!!!

To be clear it has std bulbs on ALL lights.

Cheers

Scooby22 · Jun 6, 2020

Check hazard switch earthing. And those C812 and C813 LH and RH rear lamp earth.

Disco1BFG · Jun 6, 2020

RobinR1 said:
but there are a few black wires loose behind the dash

There's your problem.

doriz said:
It's always an earth

+1 - OP:- See above ( I.E. loose black wires

)

RobinR1 · Jun 6, 2020

neilly said:
To be clear it has std bulbs on ALL lights.

Cheers

The only change made was from sealed beams to standard H4 fitting Headlamp units. New sidelamp & indicator assemblies are fitted but standard Landrover units from Britpack!!!!

RobinR1 · Jun 6, 2020

Disco1BFG said:
There's your problem.

+1 - OP:- See above ( I.E. loose black wires )

These cables have been traced to the loom and shorted to the chassis without success. We think they were for orange warning light for the roof or spotlamps!

bluedog333 · Jun 6, 2020

RobinR1 said:
Already done that without success. Where is the blinker unit located. We have checked and cleared all the relays and can find the hazard no problem but the indicators seem to be relaying through the Hazard relay & it already was checked out!!!

The flasher unit is the relay, behind the fuse cover.

bluedog333 · Jun 6, 2020

This was useful when I had a fault :
https://forums.lr4x4.com/topic/25376-hazard-switch-indicators-fault-diagnosis/

RobinR1 · Jun 6, 2020

bluedog333 said:
The flasher unit is the relay, behind the fuse cover.

Behind the fuse cover there are two Relays! A red PRC relay that is for the wiper unit according to google & the other was swapped with another from another Defender without success!!!! Completely at wits end

Hicap phill · Jun 6, 2020

RobinR1 said:
Behind the fuse cover there are two Relays! A red PRC relay that is for the wiper unit according to google & the other was swapped with another from another Defender without success!!!! Completely at wits end

not got a wipac blue relay there?

RobinR1 · Jun 6, 2020

Hicap phill said:
not got a wipac blue relay there?

No. That's possibly the thing missing. Along the lower edge of the fusebox are 5 small relay type things, they arent present in the other defenders around us and behind the Fusebox cover there are only 2 Relays, a black one & a red/pink PRC relay that shows as a wiper timer relay! That's all we can see.

Hicap phill · Jun 6, 2020

Take a photo?
Thanks

Different Indicator fault

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