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Great indicators relay fix

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uwbuurman
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My E21(s): 1978 type 1 323i 5speed dogleg Polaris
Location: Ljouwert

Re: Great indicators relay fix

Post by uwbuurman » Tue Aug 21, 2018 4:41 pm

Oh well, what harm can be done for less than eight bucks.... please keep us posted on how this turnes out.


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1978 BMW 323i
1980 BMW 528i
1987 BMW 325iA cabriolet
2006 BMW 320d touring High Executive
2015 BMW 320dA High Executive Sportline

baldy672
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Joined: Mon Aug 20, 2018 7:09 pm
My E21(s): 1978 US 320i manual
Location: Hancock, NH USA

Re: Great indicators relay fix

Post by baldy672 » Tue Aug 21, 2018 4:51 pm

That's what I figure. Considering all the shortcuts that have been done to this poor car to keep it together (the pollution control system broke off and instead of giving BMW $900 for a 2" pipe, we welded a piece of metal over the hole) I can't see any harm in cobbling on some other flasher. I thought it was worth asking if it seemed like a reasonable guess but I'm just going to order one. I also found this - http://www.ceclighting.com/pdfs/EF26.pdf which I can get in the U.S. and I may get one of those since it might work better.

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BertjeConti
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My E21(s): E12 520-6
Location: nederland , Weert

Re: Great indicators relay fix

Post by BertjeConti » Tue Aug 21, 2018 5:37 pm

The one mentioned above won't work, it does not have a signal light output, but instead a hazzard switch inpunt
Try the amazon flasher, if the unit doesn't work, its only 9 dollars in the bin.
Image Megasquirted '77 E12 520-6

baldy672
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Posts: 11
Joined: Mon Aug 20, 2018 7:09 pm
My E21(s): 1978 US 320i manual
Location: Hancock, NH USA

Re: Great indicators relay fix

Post by baldy672 » Tue Aug 21, 2018 6:03 pm

I see that now, thanks. Yes, and the 3-pin option is fine too. I'm okay splicing diodes in to get the indicator back. If the $9 option won't cut it, I' have all sorts of Arduinos laying about and I can go high tech.

baldy672
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Posts: 11
Joined: Mon Aug 20, 2018 7:09 pm
My E21(s): 1978 US 320i manual
Location: Hancock, NH USA

Re: Great indicators relay fix

Post by baldy672 » Thu Aug 23, 2018 5:27 pm

I went the 3-pin route. The Novita EP34 was in stock at the local store for $12. I made some male/female pigtails to rearrange the pins to fit the factory connector and it works great. I don't have the dash indicator at the moment. Rather than using the diode solution that requires modifying a harness or splicing into wires, I'm going to get that back by adding a MOSFET to the flasher, using the output to gate it and let it handle switching the current to the dash indicator. I don't have time now but I'll do it in a week or so and post the mods. This way the car is unmodified and I simply hacked up the flasher to give me the extra output.

Side question - the stray pigtail above is a gray wire that seems to have hot battery voltage. What is it for? It's not connected (obviously) and it seems to have no place to connect it. It's not corroded which *might* mean it got disconnected or maybe not. Was there some optional feature my car doesn't have?

Image

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BertjeConti
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Posts: 1646
Joined: Mon Nov 04, 2013 9:49 pm
My E21(s): E12 520-6
Location: nederland , Weert

Re: Great indicators relay fix

Post by BertjeConti » Thu Aug 23, 2018 6:34 pm

nice fix with the pigtails :thumbsup
Image Megasquirted '77 E12 520-6

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