yet another flasher thread...

Sean Haas

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Have been chasing the same issues everyone has, dash indicator not working. Left mostly never worked, right conked out recently. I have checked grounds, contacts, etc. in the lights. External lights always worked fine and are uniformly bright. I built the pigtail setup and added an electronic flasher relay - dash indicator lit up, but stopped after 4 times or so, is very inconsistent but never stays lit. It works fine with the hazard switch so I know the indicator bulb is OK. Am I correct in thinking that with the electronic relay this narrows it down to the path between the relay harness and the dash light? What should I be checking? I find trying to read the three different wiring diagrams I have like reading sanskrit, not my strength. I'm using this relay:

1626529556021.png
 

Blinkling

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I haven’t fixed the problem myself but I did take the original module apart and figure out why it works with all the flashers on at once but not with the left or right individually.


I can’t tell if your aftermarket module would have the same pitfalls as the original. Can you link the pigtail method for me?

When I tackle this again I intend to just add a second relay to serve the indicator.
 

jmackro

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Was the turn signal flasher in your photo - the EF-33RL - the one you installed? If so, I'm not sure that one is correct for e3/e9's. I have a EF33 (or it's CARQUEST equivalent, the 7312) in my e9, and it works great.
 

sfdon

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I thought the ef-33rl with added ground was intended to eliminate hyperflashing in LED installations?
reading the casing it states LED flasher.
 

jmackro

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I thought the ef-33rl with added ground was intended to eliminate hyperflashing in LED installations?
reading the casing it states LED flasher.
So are you saying that the EF-33RL should work for Sean's application? Do we know whether he has incandescent or LED bulbs? My coupe, with the EF33 has a combination of bulb types. I don't recall why I chose that model - I think a post in the 2002 forum that was referenced from here.
 

sfdon

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Yes- you were part of that thread.

 

Sean Haas

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I was considering adding LEDs which is part of why I started this project, but for now I have incandescent bulbs, I believe it's compatible with both. Here's another thing that cropped up this morning - when I turn the interior fan on, the relay begins clicking although no lights are activated, from my quick check when I got into work the directionals still operate normally even if this is occurring. I also plugged in a "heavy duty flasher" that some on the 2002 site said worked better for them - with the directionals off it immediately began spastically clicking and something began to heat up (we all know electronics work via smoke and a bad smell, and if that gets out they don't work any more), and the dash lights began flashing, so I quickly yanked it out. It had the same X/L/P connector setup with no ground. So likely a ground issue somewhere?

I believe Don is right as to why the ground is on that unit (prevent hyperflash with LED.) For kicks I had unplugged the ground wire and it it didn't change how it operated (outside lights work fine, dash light only here and there.)

my pigtail setup is akin to this (this is for a 2002, not an E3, but you get the idea.)
1626701012611.png

Here's the relay that was in there, I believe the connections are:
Pin 87 - power, goes to X pin in new relay
Pin 30/51 - ground
Pin 86 - dash light, goes to P in new relay
Pin 85 - directionals, goes to L in new relay
1626701216684.png
 

sfdon

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I was considering adding LEDs which is part of why I started this project, but for now I have incandescent bulbs, I believe it's compatible with both. Here's another thing that cropped up this morning - when I turn the interior fan on, the relay begins clicking although no lights are activated, from my quick check when I got into work the directionals still operate normally even if this is occurring. I also plugged in a "heavy duty flasher" that some on the 2002 site said worked better for them - with the directionals off it immediately began spastically clicking and something began to heat up (we all know electronics work via smoke and a bad smell, and if that gets out they don't work any more), and the dash lights began flashing, so I quickly yanked it out. It had the same X/L/P connector setup with no ground. So likely a ground issue somewhere?

I believe Don is right as to why the ground is on that unit (prevent hyperflash with LED.) For kicks I had unplugged the ground wire and it it didn't change how it operated (outside lights work fine, dash light only here and there.)

my pigtail setup is akin to this (this is for a 2002, not an E3, but you get the idea.)
View attachment 123197
Here's the relay that was in there, I believe the connections are:
Pin 87 - power, goes to X pin in new relay
Pin 30/51 - ground
Pin 86 - dash light, goes to P in new relay
Pin 85 - directionals, goes to L in new relay
View attachment 123198
That’s not a flasher relay!!!
 

Sean Haas

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Well, if that's the case then perhaps that's my issue, I've solved nothing. Which relay is that then?
 

sfdon

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You might show us the printing on the can for the part number.
looks like one of three other metal can relays that live in the car.
Turn signal relays look like this…. Plastic case, metal hanger clip, L shaped pin configuration.
 

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sfdon

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My first guess is that is the AC fan/blower fan changeover relay.
be careful- you are fooling around with some big amperage on this…
 

Sean Haas

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Yeah, not any more, I'm putting it back and yes I know what is the actual flasher relay now. That explains a whole lot. I work in my garage at night after kids are in bed and in the dark thought the plastic one said "washer" on it, but it's whatever is similar in german that relates to flasher apparently. I've managed to mostly avoid doing dumb stuff learning all this, but not in this case, luckily not with consequences...oh well. thanks for saving me!
 
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