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simple electric questoins

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Old Jun 15, 2009 | 10:44 AM
  #1  
ngiffin417's Avatar
ngiffin417
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Default simple electric questoins

When it comes to electrical im pretty much lost. last year I jerry rigged my stereo electrical by stealing it from a fuse on the fuse box inside the fire wall. It worked ok until I robbed more power from there for my new electrical fan and now I can't run them both at the same time because there isn't enough juice. So where is the CORRECT place to wire these things?

Thanks
Old Jun 15, 2009 | 06:41 PM
  #2  
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The radio power source is the Radio fuse in the fuse box. The Fan should get it's power from the power side of the solenoid
Old Jun 15, 2009 | 07:55 PM
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67mustang302
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Yes, the fan needs to use a relay and draw off the power side of the starter solenoid or the + battery terminal(same difference). Then you use the coil side of the relay and tie it into a 12v+ switch and the fan controller.
Old Jun 16, 2009 | 03:51 PM
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ngiffin417
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ill get upside down in the front seat to look for the radio fuse, thanks.

As far as the fan, i have it wired right now straight from the fan to the switch, can i just wire the power stright from batery to the switch? The fan didnt come with a relay
Old Jun 16, 2009 | 03:55 PM
  #5  
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2+2GT
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Originally Posted by ngiffin417
When it comes to electrical im pretty much lost. last year I jerry rigged my stereo electrical by stealing it from a fuse on the fuse box inside the fire wall. It worked ok until I robbed more power from there for my new electrical fan and now I can't run them both at the same time because there isn't enough juice. So where is the CORRECT place to wire these things?

Thanks
There is already a fuse and wire set up for the radio, you don't have to "rob" anything.

The heater fan likewise.

Go through this:

http://www.hammar.dyndns.org/wiring/wiring1968.htm
Old Jun 16, 2009 | 04:03 PM
  #6  
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67mustang302
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If you're talking about a radiator electric fan, you need to run it off of a relay. I just installed a Painless universal, $27 at Summit. E fans pull so much amperage(they can spike well over 30A at startup) that you need to run it off the hot side of the starter solenoid or the + battery terminal so you don't blow fuses or start electrical fires. The relay is then hooked up to a fan control and a 12v+ switch, so when the fan controller comes on the relay closes and the fan gets power from the hot side of the battery.
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