Diode Help Needed - Automotive Wiring and Electrical


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Diode Help Needed

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350S10PETE
New User

Sep 15, 2009, 9:30 AM

Post #1 of 5 (3109 views)

Diode Help Needed	Sign In

Hello, I have a S10 with a homemade 350 so manuals don't work for me. I am having trouble with aftermarket fan controllers, they don't last, so I am going to attempt to control the fans that cool my engine with homemade circuitry. I have attached a document that hopefully will provide all of the information necessary for you to advise me as to the kind/size of the diodes that I will need. If you feel that I am out in "left field" with my idea your advice will be appreciated.
Thank You,
Pete

Attachments:

Two Fan Operation Requirements.doc (29.5 KB)

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 15, 2009, 10:20 AM

Post #2 of 5 (3102 views)

Re: Diode Help Needed	Sign In

Diodes are simply one way valves for electricity.

Rather than go to manual switches, why don't you just ad a rely to the controller your using. If powering the fan is overloading the controller, then use the controller to trigger a relay that is carrying currunt from another source.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

350S10PETE
New User

Sep 15, 2009, 2:59 PM

Post #3 of 5 (3092 views)

Re: Diode Help Needed	Sign In

I know what a diode is and what it does, that is not what my question was. I also stated that fan controllers did not last and were expensive. Did you look at the attachment that went with this post?

Pete

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 15, 2009, 3:01 PM

Post #4 of 5 (3092 views)

Re: Diode Help Needed	Sign In

Yes I did but I would never wire a fan to a manual switch.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Sidom
Veteran / Moderator
Sidom profile image

Sep 15, 2009, 8:28 PM

Post #5 of 5 (3087 views)

Re: Diode Help Needed	Sign In

HT has the best idea. Those fans draw a lot of amps no matter how you wire it up, if there isn't a relay for the fans then you will have problems down the road.

A schematic of the way you have it wired right now would be helpful............

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