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PostPosted: September 16, 2018, 10:30 pm 
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I tried off and on all day today trying to figure out how to wire my hazards and turn signals and failed miserably. Please help identify what each numbered pin goes to. I think I fried the flasher unit as it doesn't work any more :(

thanks in advance

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PostPosted: September 17, 2018, 8:48 am 
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I'll take a shot.

Have you got the Hella part number?

Have you got the link that you copied the schematic from?

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PostPosted: September 17, 2018, 5:46 pm 
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I guessed it was PN 3916011 and found an internal diagram that I added the wiring to below. Assumes 49-15 is normally closed and open when the button is pressed.


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MNOT HAZ SW.jpg
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PostPosted: September 17, 2018, 7:56 pm 
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MV8, the problem with your diagram is you don't show the directional switch as shown in Mnot's drawing.
I'm not sure if the two switches are the same.


edited,

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PostPosted: September 17, 2018, 9:00 pm 
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http://catalog.hella.com/media//downloads/460_326-00.PDF

No, sorry, not the same one. though it might work the same way. This is where I copied the pinout from. Thanks a ton guys,

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PostPosted: September 18, 2018, 5:45 am 
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Chuck, I know, but there is more than one way to wire anything. I based my schematic on the design of the switch instead of how they show that it can be used, but I could be mistaken and cannot check the switch. Here is a link to the switch design drawing:

http://catalog.hella.com/catalog/produc ... 20916-011/


Mnot, that is the same switch. At the top of the drawing you linked to, under each language is the part number. Ignore the letters and dashes and the number is the same.

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PostPosted: September 18, 2018, 8:47 am 
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Mnot, Does your switch actually have a terminal labeled 30B? The part drawing and hook-up diagram shows that terminal present but their internal switch schematic does not. Something is wrong.


MV8, your diagram shows the load side (output) of the flasher unit going to ground via the wire you have between 31 and 49 then thru the switch via term 49 and 15. I don't think this is what you want, is it?


Mnot, this can be wired with one or two flasher units. One for turn signals and another for flashers. What is your setup?

Mnot, do not try to test anything again until we get this straight.

Mnot, I am working thru this using the (conflicting) Hella data and some other info I have found. I need to totally understand your switch and setup. I think I am close but need to know the above info before I send you on another mistake.

edit: it appears that the terminal numbering system vs function is common across all hazard switches. (I think)

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PostPosted: September 18, 2018, 11:44 am 
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rx7locost wrote:

MV8, your diagram shows the load side (output) of the flasher unit going to ground via the wire you have between 31 and 49 then thru the switch via term 49 and 15. I don't think this is what you want, is it?


Yes, that is what i want. 49-15 is NC, just like 31 and 58. Everything else is NO. When the button is pressed, all contacts are momentarily open. There is no short. I mentioned 49-15 being NC before. I also show a 3 pin flasher but a 2 pin can be used. It says this on the drawing. It is a euro 3 pin flasher which is different than a domestic 3 pin, so he should just use a two pin and there is no third pin to confuse.

I'll step out of this and let you continue to help Mnot. :cheers:

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PostPosted: September 18, 2018, 2:30 pm 
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I got it. You are showing a dedicated, 2nd flasher rather than using the single flasher for both turn signal and 4-way operation as shown in Mnot's 1st drawing. If he is adding the 4-way flashers to an already existing and functioning system, your wiring should work. If he is creating a whole new system, then it is easier to use the single flasher IMO.

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PostPosted: September 18, 2018, 7:33 pm 
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I am starting from scratch. I am using a Miata Turn Signal Switch (which I can't figure out either but that is a different topic). I was planning to use an adjustable 2 pin flasher for motorcycles https://www.amazon.com/gp/product/B078L3CGH5/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1 but I think I killed it testing. All signal lights are LED.

For testing on the bench, I am using my son's 12V power wheels truck, similar to a riding mower battery.

Thank you guys so much for putting this much effort into this for me.

-gavin

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PostPosted: September 19, 2018, 12:20 pm 
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Mnot (Gavin), I think you are right keeping the Miata switch a separate subject. I also don't see any reason that the flasher you selected wouldn't work. You might try it again with my diagram and you might get lucky.

I searching for as while for your solution, I found a great similarity in the way the pin numbers are numbered in various schematics. There seems to be a cross-platform standard for function vs pin number. If that is correct, then I offer the below drawing as one solution. It is based mainly on a thread I found over on Locostbuilders.co.uk

http://www.locostbuilders.co.uk/viewthr ... tid=145580

According to them, the internal switch is clearly shown (excluding pin 58 of course).

The only difference between that and your switch is that yours has an additional terminal (58) that is wired to the marker lights. I believe that this is done so that at night, you could find the switch to activate it. there might be an additional internal set of contacts that would then "flash" that light when activated. This is a stretch but might be the case. In any case, I believe that it is not necessary to connect pin 58.

I used the Hella wiring diagram and simplified it.

It might be easier to use a spdt switch rather than the Miata Turn Signal switch to test out the circuit. Keep it simple.

Please respond with the results of your testing whether this works for you or not.


Attachment:
Hella 4-way.jpg
Hella 4-way.jpg [ 114.43 KiB | Viewed 2015 times ]


Attachment:
switch..JPG
switch..JPG [ 16.56 KiB | Viewed 2015 times ]

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PostPosted: September 21, 2018, 10:11 pm 
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Wow Chuck, thank you so much. it looks like you spent a lot of time on this, I am grateful. I will give it a try this weekend and report back.

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PostPosted: September 23, 2018, 8:58 am 
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Success!!

I didn't use the turn signal but I hooked everything up as you illustrated and it worked perfectly. I guess I didn't fry the flasher because it works fine.

Thank you Chuck for putting the time in to draw it out simply. Care to explain the Miata turn switch?? :lol:

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PostPosted: September 23, 2018, 11:15 am 
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I love a mental (and Google) challenge. And yes, I did spend a lot of time researching and trying to make the answer as simple and clear as possible. The finding of the UK builder's writeup was the icing. I learn a lot in the process too.

Glad to have helped. :cheers:

What exactly are you needing to figure out about the Miata switch? What year? I'll see what I can do.

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PostPosted: September 23, 2018, 6:59 pm 
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I don't understand what each connector does. There are 4 big male spades in the middle that appear to be for the headlights, high beam and the Battery in. after that, I have no idea. I put + into all of the spades and I cannot identify what each does. I have these schematics from an NA Miata (90-94) which is what I pulled the column from. I would like to be able to use the "flash to pass" part of the switch.
Attachment:
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Attachment:
Screen Shot 2018-01-04 at 11.02.01 PM.png
Screen Shot 2018-01-04 at 11.02.01 PM.png [ 56.15 KiB | Viewed 1855 times ]


Thank you
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