Wig Wag contradiction of information


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02jmpr
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Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 3:50 pm



I read from Signal Dynamics and forums that the Wig Wag brake module has a max allowance of 10 amps and to use no more than 3 bulbs on the installation. I emailed Signal Dynamics to ask if I could install two modules on my 1500 so I could have all four brake lights flashing. They stated there was no need that one module would be fine, so I them reminded them that 4 bulbs would equal 10.8 amps. Their reply was "oh no, it's 10 amps per output".

I'm tending to not believe them since I've read forums where people are stating they've blown up the module on 4 bulb installation. Anyone out there have first hand experience with wigging and wagging all 4 bulbs? :D



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bellboy40
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Re: Wig Wag contradiction of information

Postby bellboy40 » Thu Feb 06, 2014 4:03 pm

With the wig-wag in operation you are only lighting two bulbs at a time right? Seems like it should work ok to me.

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 4:09 pm

Yes; two or three will work fine. I'm asking about four. Specifically 4 1157's drawing 10.8 amps. LEDs don't count due to their low draw

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Re: Wig Wag contradiction of information

Postby bellboy40 » Thu Feb 06, 2014 4:20 pm

I thought you were talking about using it in the wig-wag mode where only two bulbs were on at the same time then they go off and the other side lights up. You would only have two bulbs on at any given time. Is that not how you want it to work?

I have the Signal Dynamics Back Off module that flashes all the brake lights at the same time. It is rated at 10 amps max also but I have some LEDs in the brake lights so no problem.

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 4:38 pm

Yes, in wig wag mode but wiring in 4 lights instead of just either the trunk brakes or the saddlebag brakes. I want to wire it to wig wag top left with bottom right and vice versa. the problem here is that I want to use mode where they stay on solid after flashing and that will light up all 4 bulbs at the same time with current running through the module of 10.8 amps.

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Re: Wig Wag contradiction of information

Postby thrasherg » Thu Feb 06, 2014 4:54 pm

where do you get the 10.8 Amps from? I believe brake bulbs are 21 watts each so four of them would equal 84 watts, P=V*I so 84watts/12volts = 7 amps?

How did you come up with 10.8 amps?

Gary

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 5:09 pm

Just from bulb specs I've seen online. I've found between 2.1 to 2.7 amps per bulb. Or rather, 2.1 for one filament and .6 for the other . So 2.7 total times 4=10.8A. If I'm missing something, feel free to give me an education!
Last edited by 02jmpr on Thu Feb 06, 2014 5:17 pm, edited 1 time in total.

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Re: Wig Wag contradiction of information

Postby bellboy40 » Thu Feb 06, 2014 5:15 pm

02jmpr wrote:Yes, in wig wag mode but wiring in 4 lights instead of just either the trunk brakes or the saddlebag brakes. I want to wire it to wig wag top left with bottom right and vice versa. the problem here is that I want to use mode where they stay on solid after flashing and that will light up all 4 bulbs at the same time with current running through the module of 10.8 amps.


You are going to have a lot of fun wiring it like that! Even if you do get it wired to work like that you will still only have two lights on at a time.

Just about every spec I have seen on the 1157 bulb shows a 2.1 amp draw.

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 5:19 pm

The wiring is simple. There will be 4 lights on when the unit is done flashing!

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Re: Wig Wag contradiction of information

Postby bellboy40 » Thu Feb 06, 2014 5:23 pm

If you are worried about the current draw, why don't you put in some LEDs and be done with it?

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 5:42 pm

LED are expensive and require resistors. I'm OCD also so no way I could mix and match LED and incandescents.

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Re: Wig Wag contradiction of information

Postby thrasherg » Thu Feb 06, 2014 6:38 pm

I apologize in advance, I am not familiar with the wig-wag, but on the bulb you are using there are two filaments (a 5 watt and a 21 watt, hence the 0.6A and 2.1A readings). You are looking at the total current draw for both filaments (26 watts of light), but I assume the wig wag only flashes the 21 watt filament not both filaments? 2.1Amps is a bit high for a 21 watt bulb, but not unreasonable. If the wig-wag does flash both filaments then your concerns seem valid, if as I suspect it only flashes the 21 watt filament, then your unit should be safe to drive the 4 bulbs. It really comes down to how is the wig wag wired into the wing and how many filaments does it actually flash? Is there a schematic that you can share?

Gary

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 6:54 pm

Sorry no schematics.

I don't know if both filaments light at same time or not. What it boils down to is 4 brake bulbs on at the same time and all drawing power through a 10A max rated module.

We don't necessarily have to worry so much about the theories or details (although it's fine if we do). I really just wondered if anyone had actually done this successfully yet. Another forum had a guy stating his worked for just about a year but then burnt up and failed.

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Re: Wig Wag contradiction of information

Postby ct1500 » Thu Feb 06, 2014 8:16 pm

Only one filament is controlled by the brake switch so it is 2.1x4, the other are running lamps.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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Re: Wig Wag contradiction of information

Postby 02jmpr » Thu Feb 06, 2014 8:33 pm

Bingo. Think we just hit the jackpot. Thanks so much. I didn't know that's how it worked. I'm safe to hook up all four then at 8.4 amps. Great news!

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Re: Wig Wag contradiction of information

Postby bellboy40 » Thu Feb 06, 2014 11:29 pm

02jmpr wrote:Bingo. Think we just hit the jackpot. Thanks so much. I didn't know that's how it worked. I'm safe to hook up all four then at 8.4 amps. Great news!


Dunno why you didn't know that. It was pointed out to you about 6 or 7 posts above.

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Re: Wig Wag contradiction of information

Postby 02jmpr » Fri Feb 07, 2014 12:01 am

Well I certainly beg of your kind forgiveness. I didn't understand it that way when reading the earlier posts. Most of my time was spent replying to posts and attempting to stay on track. I must have misunderstood that point!!!!!! Thread can be closed.

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bellboy40
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Re: Wig Wag contradiction of information

Postby bellboy40 » Fri Feb 07, 2014 11:50 am

02jmpr, I'm sorry if I offended you. That wasn't my intent. Reading over my last post though it sounds kind of snippy. Sorry about that.

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Fiberthree
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Re: Wig Wag contradiction of information

Postby Fiberthree » Fri Feb 07, 2014 12:26 pm

Both filiments are used since the wig-wag switches the ground connection off and on instead of the hot wire. Total amperage does run through the unit when all four lamps are lit. I talked to their tech support before I installed mine and that was the information he gave me.
Ed

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bellboy40
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Re: Wig Wag contradiction of information

Postby bellboy40 » Fri Feb 07, 2014 12:52 pm

Is this the unit you are talking about? According to their instructions it looks like it is wired to the brake light circuit and not the ground. They don't have a schematic drawing of how it is wired that I can see. From the description they have of the wiring it would just light the brake light filament.
However they do recommend only using two bulbs of the brake lights though if using a regular 1157 type bulb.

http://www.signaldynamics.com/backoffwigwag

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Re: Wig Wag contradiction of information

Postby Fiberthree » Fri Feb 07, 2014 2:44 pm

My apologies. I went back and re-read the first post. I have the Kriss Industries Firefly unit, not the Signal Dynamics product.
http://www.kriss.com/old_new.htm
I had to do some digging before I found that the company has significatly upgraded their products. The newer units are a bit more expensive. But they do have some awesome products. Mine has been working flawlessly for the past 15 years.
Ed

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Re: Wig Wag contradiction of information

Postby Bluewaterhooker0 » Fri Feb 07, 2014 11:22 pm

Just to muck up the water a little more. I have the Signal Dynamics Back-Off XP. It has the same warnings that are initially described in the original post. "No more than 3 bulbs"...etc. I went through the same research as is discussed here, and found that the 1157 bulb specs only show about 2.1A each in brake mode, or about 8.5A for all 4. I noticed that the voltage spec being either 12.8 or 14 can changed that amperage, but apparently not to a degree great enough to throw the amps over the limit. Being a cautious kinda guy, I called Signal Dynamics and talked to a very knowledgeable man last year before installing the device. I told him about the additional spoiler LED on my SE, and my concern that it might throw the amps too high. His suggestion was to split the functions of the Back-Off between the 2 light circuits. So, I hooked up the "5 Flash/Constant On" mode to the main 1157 brake lights, and connected the "4 Flash/On/Repeat" mode to the spoiler LEDs. He indicated that each mode/circuit was capable of handling 10A each. I later, also connected a separate LED brake light to the 1157 circuit for additional visibility. Have had it on for about a year now, with no issues. Don't know if this will help with the original post, but for anyone looking at the Back-Off XP, this might be of use.
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02jmpr
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Re: Wig Wag contradiction of information

Postby 02jmpr » Sat Feb 08, 2014 12:06 am

That's a great point and one I had not considered before. I believe this is exactly what I'll do to mine. I appreciate your reply!

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Re: Wig Wag contradiction of information

Postby Happytrails » Tue Feb 11, 2014 9:13 pm

I guess I'm gonna muck it up some too. I thought about 4 lights on the same wig wag your using but then I thought about redundancy. I've heard of wig wags failing but I couldn't even guess how rare that might be. I just dont know if I want to connect 4 lights to a wig wag, have it fail and only have a couple of the lower brake lights left (depending on which ones you hook up). I've considered hooking it up to 2 trunk lights and then get another wig wag for the spoiler light (I think signal dynamics makes one just for that). I know I'm probably worrying about nothing but something tells me to not put all my eggs in one basket. Would love to see video's of your setups when done!


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