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Old 09-22-2008, 12:54 AM   #10 (permalink)
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Join Date: May 2008
Location: Victoria BC
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Gerald - '91 Pontiac Firefly 3dr
Team Metro
90 day: 40.08 mpg (US)
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Originally Posted by basslover911 View Post
With this, will the radio still cut off when you push the button? (It does it in mine when I use the key, but if I install a button I hope that it doesnt cut off anymore)... ??

And why two relays instead of just one?
If it cuts out with the key it will with the button. As far as the car is concerned, it can't differentiate between the button and the key. I think most cars will cut off most accessories (lights, radio, climate control) so almost all power can be dedicated to the starter. Do you have some kind of high-power fancy car audio system?

I used two SPDT relays because they were cheaper than one DPDT relay with the appropriate current rating.
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