[FireBrick]

I need to install a amateur radio and need 12 power but only when the ignition is on.
As the radio draws heavy amp. We use what's called a 'A Relay'.
When the ignition comes on, it will energize the relay which has big wire connection to the battery.

When ignition is off, the relay drops out and the radio goes off.

So which wire should I tap into to energize the relay.

please and thank you

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[buttermilk]

Go to Advance Auto or some other auto parts store and get a fuse tap. You just pull out an existing fuse and plug it in. Then put the fuse you pulled out in the bottom hole and a new fuse in the top hole and you have a nice separate fused connection with no ugly wire splicing. They cost about $7.00

 

[ramblerdan]

Welcome, FireBrick.

Under-dash fuse assignments

Also see
http://www.elementownersclub.com/forums/showthread.php?p=681706
http://www.elementownersclub.com/forums/showthread.php?p=71139
http://www.elementownersclub.com/forums/showthread.php?p=50196

 

[Dom.five]

A quick search revealed this old thread. It specifically deals with Ham radio installations.

I like to keep the power feed to radio transceivers shielded. But I'm anal about noise/induction interference, that can go both ways. To the car's systems, or to the radio's systems.

I hope this helps.

Dom

 

[Dom.five]

Feel free to email direct [email protected]
Feel free to look at my weather and webcams at:
http://hhweather.webhop.org

Oh, Nice job on the Weather and web cams!

Dom