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Old 01-17-2008, 04:59 AM
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diagram for wiring up a toggle switch please

hi guys, i'm installing a cooling fan. i need a diagram on how to hookup a toggle switch. can you help me out please????? thank you jeezer

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Old 01-17-2008, 05:16 AM
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You need to use a relay as well as the toggle switch. Let the toggle switch activate a relay to cut your fan on and off. This way you will not be burning your toggle switch out all the time and may prevent a fire hazzard as well.
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Old 01-17-2008, 05:27 AM
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i agree with henry, use a bosch relay. you can wire it directly to battery power (with an inline fuse/circuit breaker) and use your toggle switch to ground the relay to turn it on. i don't have a wiring diagram in front of me but i can look it up tomorrow. the bosch relays have a standard 4 blade terminal hookup that is easy to wire and the fan load goes through the relay, not the switch.
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Old 01-17-2008, 06:08 AM
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Single pole ,single throw , or double pole double throw , or single pole , double throw?????
There are a LOT of "toggle switches" out there.. what are you hooking up?
I'd go with the relay and forgo a "switch". What if you shut your car off , but it still needs to cool ? I hear electric fans kick on in cars that are parked , so I imagine it is necessary.
Good luck with your project.
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Old 01-17-2008, 07:34 AM
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Take a look at these diagrams using relays.

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File Type: pdf 2 fans at once.pdf (9.5 KB, 290 views)
File Type: pdf 2 fans independent.pdf (10.4 KB, 244 views)
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