Diff between constant 12v and switched

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Tuce_3000GT

Member - Posts: 1

Joined: May 13, 2002

Location: United States

Posted: May 13, 2002 at 5:35 PM / IP Logged

I'm hooking up a system in my brothers 1994 corolla and the diagram shows 4 wires coming into the reciever besides speakers a constant 12v a switched 12v an illumination and a ground i have to match those w/ the factory 3 others battery, ignition, and ground. obviously i know what the ground is but how and which do i match up on the ohers. please help im extreamly frustrated.

Tuce

1993 3000GT

Platinum Bosch 4

Custom Air filter

Snake Eyes

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: May 13, 2002 at 6:59 PM / IP Logged

The Constant is a 12volt current that never shuts off. This allows the head unit to maintain its memory. A switched is connected to the ignition which turns the head unit on and off . https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1994&make=Toyota&model=Corolla&ID=18978&type=Stereo

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: May 13, 2002 at 7:03 PM / IP Logged

Forgot to mention on your new head unit it might not have an illumination wire. In this case you do not have to connect the illumination wire in your factory harness to anything

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Diff between constant 12v and switched

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