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Old 10-20-2015, 10:17 PM   #1
B-Dubya
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Default Voltage Reducer Wiring - Star Car

I have a 36v>12v converter from a 2007 Star that I need wiring layout for. There are a total of (4) wires. (2) red wires, one of which is fused, (1) black and (1) yellow.
I tried fused red to +36
Black to -36
I thought yellow would be trigger
I was going to test other red as +12 but when I landed yellow on +36 to "trigger" the converter I only succeeded in making a small arc welder and let all of the smoke out. I have one more converter to work with before having to purchase a new one. Does anyone know the wire layout?
Thanks
BW
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Old 10-20-2015, 11:31 PM   #2
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Default Re: Voltage Reducer Wiring - Star Car

i would try this
fused red ~ 36v +
black ~ 36v-
unfused red ~ 12v+
yellow ~ 12v-
use a DVM to test
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Old 10-21-2015, 11:45 AM   #3
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Default Re: Voltage Reducer Wiring - Star Car

I have been working on a Ruff & Tuff with a converter with the 2 reds, a black and a yellow. On the diagram on the end it says black is the negative, yellow is voltage in and red is voltage out but of course it doesn't say which one.. I do know that in my harness the yellow wire gets voltage when the key gets turned on. I would think that would be a trigger.. Wiring on a R & T is strange and I believe I am going to have to pull the entire harness out of the loom on the drivers side to chase it down..
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Old 10-21-2015, 03:20 PM   #4
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Default Re: Voltage Reducer Wiring - Star Car

Quote:
Originally Posted by B-Dubya View Post
I thought yellow would be trigger
I was going to test other red as +12 but when I landed yellow on +36 to "trigger" the converter I only succeeded in making a small arc welder and let all of the smoke out
yellow sparked when it hit a positive connection
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Old 10-22-2015, 07:08 AM   #5
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Default Re: Voltage Reducer Wiring - Star Car

Ctd, in my configuration the yellow wire is getting voltage from the harness when the key is turned on so I think in my case anyway the yellow is a trigger.
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Old 10-22-2015, 07:52 AM   #6
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Default Re: Voltage Reducer Wiring - Star Car

most i have seen yellow is triger
but not 2 red wires
i did find this

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Old 10-22-2015, 08:35 AM   #7
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Default Re: Voltage Reducer Wiring - Star Car

When in doubt look at the gauge of the wires....

Using the same color for 2 different voltages would be very unusual, even for chinese stuff.

If You post a picture, it may help, but here is what I think:
Fused Red Wire: +36v input
Small Gauge Red Wire: +36v Trigger wire
Yellow wire: +12v output
Black Wire: common negative.
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Old 10-23-2015, 06:50 AM   #8
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Default Re: Voltage Reducer Wiring - Star Car

Thanks for all of your input. My reasoning for my original guess of which wire is which was based of of wire size. With only one of the wires being smaller than the rest (red/fused) I assumed that would be +36. My guess of yellow being the "trigger" was only based on it being the odd color compared to conventional red+/black-. Who knows, the reducer may have been bad and we were right. The reducers were factory original on the star car that a friend took off some non-working carts he had at his work facility. I will try the other unit this weekend. If it doesn't work I'm sure ScottyB wouldn't mind selling me a new one.
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Old 10-23-2015, 07:07 AM   #9
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Default Re: Voltage Reducer Wiring - Star Car

If you can get the cover off the converter the circuit board may be marked.
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Old 10-23-2015, 07:16 AM   #10
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Default Re: Voltage Reducer Wiring - Star Car

could you post a photo of it ?
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