HELP - LED problems

[3Dee]

Like many, i have a mix of LED rears and filament fronts & sides....

I am now somewhat really really worried..

I have IVA booked for tues, and I still have a problem with the rear LED flashers (TOO FAST)
I started out to try to source one of those Dual Hybrid Relays, but few sell them, and the net seems to suggest that pure electronic ones get eaten and fail in short orders...and another problem ince I have stalks I am not sure I can use the factory recommended ones (bigger I understand) as they are probably too big to go inside the steering cowl according to AB,

soooo...
a few months ago I had purchased some resistors I was told would do the job from tinternet, but put them to one side at the time thinking a relay swap would be better... so out they come again...

They are quite big with a heat-sink and are 10 ohm (ARCOL 10.14 HS25 10R J)–

and so tonite I tried one – no change.. arrgh!
– tried to link two together NO CHANGE ..ARRRGGHHH!

WHY IS THIS SO HARD? - very little info on what is needed, and often conflicting!!!!!!!!

Now I am in the poo, as there is only effectively ONE DAY to try to source a solution, so ordering something off the net will be a waste of time!

Any ideas?

I am running out of them!

Keith

Edited by 3Dee on Thursday 9th May 20:16

[F.C.]

Are you connecting the resistor in series or parallel?

[3Dee]

Thanks anyway guys...

Steve at AB rode to my rescue after hrs... rang me a 9pm and suggested parallel (wish I had thought of that)..and hey-presto - it worked!

SO - for those out there with the same problem, and the same lack of detailed elecrical knowledge - just put the 10ohm resistor for each side between neg and pos feed to each rear lamp - SORTED!

I am so pleased!

THANK YOU AB -again!

[F.C.]

3Dee said:

Thanks anyway guys...

Steve at AB rode to my rescue after hrs... rang me a 9pm and suggested parallel (wish I had thought of that)..and hey-presto - it worked!

SO - for those out there with the same problem, and the same lack of detailed elecrical knowledge - just put the 10ohm resistor for each side between neg and pos feed to each rear lamp - SORTED!

I am so pleased!

THANK YOU AB -again!

Parallel connection shows as increased load to the indicator relay, essentially you are mimicking the load produced by a filament lamp.

[356Speedster]

Why so big they need heat sinks???? Do you have a link to the resistors, because as you know, I need to do the same fix

[GtrMan]

356Speedster said:

Why so big they need heat sinks???? Do you have a link to the resistors, because as you know, I need to do the same fix

A normal Bulb is round 21 watts so a resistor should be in the same level the small ceramic resistors are all low wattage ... all metal chased resistors are round that wattage ...or even higher.....M

[ezakimak]

3Dee said:

just put the 10ohm resistor for each side between neg and pos feed to each rear lamp - SORTED!

I am so pleased!

THANK YOU AB -again!

is this for the indicators?

With it wired like this will you still get the faster flashing rate if the bulb fails?

if its not for the indicators just disregard the question.

[F.C.]

ezakimak said:

is this for the indicators?

With it wired like this will you still get the faster flashing rate if the bulb fails?

if its not for the indicators just disregard the question.

No, the load will remain if the resistor is still in place, so the flash interval will remain constant on the other indicators that are still working.
Not so good for spotting a failed indicator bulb in a normal set-up when the remaining indicators flash faster.

[Life Saab Itch]

This topic is of interest.

how have the resistors affected the hazard lights?

[UltimaCH]

Reading this thread, I'm dreading the time when I have to connect the wires and getting all the electrics to work...

[Life Saab Itch]

All electrics tested yesterday. the indicators work with the hazards on, but flash very fast with the turn signal on. basically, as 3dee found out, the new LED lights don't draw enough power for the flasher to think there are enough bulbs in the system, so it flashes fast as if a bulb had blown.

I want to know if putting a resistor in the system at the tail lamps will be an overload for the hazard flasher unit (the same component as the indicator flasher).

If it is.likely to, I would like to put the resistors between the stalks (AB stalk conversion) and the relay so it would only be the turn signals affected, not the hazards as well.


Any thoughts?

[3Dee]

I put a 10k ohm resistor (heat sink version cos they get hot) in parallel (important) just behind each rear indicator light and riveted them to the metal frame - sorted!

[Life Saab Itch]

just to double check...

The hazard lights work fine with that set up?

[356Speedster]

As Keith kindly gave me a couple of spare resistors, I can confirm that the 10K resistors do the job perfectly! All indicators, hazards and alarm flashing functions work perfectly

[Life Saab Itch]

Ok. thank you.

i'll be getting some resistors then.