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clarification on radio on relays


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Zilverado 
Copper - Posts: 92
Copper spacespace
Joined: October 03, 2004
Posted: October 04, 2007 at 8:22 PM / IP Logged  

I've read a number of threads about this issue, but I still have a clarification request on this diagram...

Is the pink "Radio's Accessory Wire" lead in the diagram spliced into the car's 12v+ power to the radio - without cutting this wire? In other words, does the radio continue to get power from the vehicle's radio wire (when ignition "on") as well as this relay set-up?

And, as long as the vehicle's radio wire is only for the radio (no other accessories), a diode should not be required, correct? If other accessories (i.e. fan, etc.) remain on, then I would need a diode between the splice and the 12v+ source of the accessory wire.

Have I got this right? Any help would be appreciated - thanks.

clarification on radio on relays -- posted image.

Zilverado,
Backyard Mechanic
1986 Chevy Truck & 1992 Nissan Pathfinder
Velocity Motors 
Moderator - Posts: 12,488
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Fabrication. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.spacespace
Joined: March 08, 2002
Location: Manitoba, Canada
Posted: October 04, 2007 at 8:48 PM / IP Logged  
You are correct about splicing this wire into the back of the radio, no need to cut, just splice inline of the accessory wire. Also, no need for the diode seeing that the radio accessory will turn off after the door is opened.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Zilverado 
Copper - Posts: 92
Copper spacespace
Joined: October 03, 2004
Posted: October 04, 2007 at 10:41 PM / IP Logged  

Thanks Man - I appreciate the quick response. I am hoping to get around to doing this this weekend...

Z

Zilverado,
Backyard Mechanic
1986 Chevy Truck & 1992 Nissan Pathfinder

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