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Unread 03-23-2009, 03:38 PM   #11
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Default Re: why -12.74v across key switch?

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Originally Posted by lockman1 View Post
O.K.... I'm confused...

The key switch your talking about...
Is it THE key switch that runs your cart?
do you have the 48V, AND the 12V going to it???
Or is the 12V on a seperate switch?


Only one key switch. One blue wire and one green wire on separate terminals/screws...just signal wires for the solenoid activation circuit, right?
Then 2 or 3 more accessory wires on one of the terminals also. It shouldn't read 48v across the key switch, should it? I thought they were just low voltage signal wires.
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Unread 03-23-2009, 03:51 PM   #12
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Default Re: why -12.74v across key switch?

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Originally Posted by Extractor View Post
Only one key switch. One blue wire and one green wire on separate terminals/screws...just signal wires for the solenoid activation circuit, right?
Then 2 or 3 more accessory wires on one of the terminals also. It shouldn't read 48v across the key switch, should it? I thought they were just low voltage signal wires.
No... the key switch is not low voltage!

do me a favor...
disconnect your 12V accessory battery from your key switch, and run all of your 12V accessories separately!

OR...

If you want to tie them into your key switch, Get a 48V to 12V voltage reducer for your accessories!

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Unread 03-23-2009, 05:20 PM   #13
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Default Re: why -12.74v across key switch?

thanks, lockman... will do.
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Unread 03-23-2009, 07:41 PM   #14
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Default Re: why -12.74v across key switch?

Quote:
Originally Posted by Extractor View Post
Only one key switch. One blue wire and one green wire on separate terminals/screws...just signal wires for the solenoid activation circuit, right?
Then 2 or 3 more accessory wires on one of the terminals also. It shouldn't read 48v across the key switch, should it? I thought they were just low voltage signal wires.
You should have your full battery pack voltage at the key switch so when charged it should read at least 50.6 volts. As stated previously if you're reading 12 volts you better stop everything, disconnect your batteries and slowly and cautiously check your wiring, one wire at a time before something goes poof! Good Luck
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Unread 03-23-2009, 09:23 PM   #15
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Default Re: why -12.74v across key switch?

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Originally Posted by scubabud View Post
You should have your full battery pack voltage at the key switch so when charged it should read at least 50.6 volts. As stated previously if you're reading 12 volts you better stop everything, disconnect your batteries and slowly and cautiously check your wiring, one wire at a time before something goes poof! Good Luck
I think what happened scuba... (correct me if I'm wrong Extractor...)

(I think) he tied his 12V accessory battery into his ignition (key) switch,
so when he turned his key on or off... his radio, lights, etc, would turn on or off also!

Which in turn... if he would have driven his cart, and had the radio and lights on at the same time...
something (wires, radio, lights) would have went POOF!

48V + 12V = 60V going through the radio, lights, wires...etc!

It wouldn't be pretty!

(but... that's what they make fuses for!)
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Unread 03-23-2009, 10:55 PM   #16
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Default Re: why -12.74v across key switch?

Yup- Lockman, you are correct...

Now I'll get the terminal block out and work it out (with fuses of course).
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Unread 03-23-2009, 11:19 PM   #17
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Default Re: why -12.74v across key switch?

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Yup- Lockman, you are correct...

Now I'll get the terminal block out and work it out (with fuses of course).
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Unread 03-23-2009, 11:31 PM   #18
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Default Re: why -12.74v across key switch?

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Originally Posted by lockman1 View Post
I think what happened scuba... (correct me if I'm wrong Extractor...)

(I think) he tied his 12V accessory battery into his ignition (key) switch,
so when he turned his key on or off... his radio, lights, etc, would turn on or off also!

Which in turn... if he would have driven his cart, and had the radio and lights on at the same time...
something (wires, radio, lights) would have went POOF!

48V + 12V = 60V going through the radio, lights, wires...etc!

It wouldn't be pretty!

(but... that's what they make fuses for!)

Hey... A real man doesn't need fuses... just a lot of money to correct the mess made by not having them...
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Unread 03-23-2009, 11:38 PM   #19
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Default Re: why -12.74v across key switch?

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Originally Posted by scubabud View Post
Hey... A real man doesn't need fuses... just a lot of money to correct the mess made by not having them...


I didn't say that a real man needed fuses...
But, I bet that's why they make them!!!

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Unread 03-24-2009, 08:41 AM   #20
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Default Re: why -12.74v across key switch?

Still does not explain why he has 12 Volts on key switch insted of 48 + Volts.

Unless he is measuring ACROSS the switch.
Measure to the input (switch Odd) using Common Ground,
then measure output (switch ON) using Common Ground,
This should be (48+Volts + 12+Volts = 60+Volts) with SW off (GOT to be ) !!!
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