Stereo - how to wire
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I want to properly wire the following: - Sony - Head unit stereo Here is a crude diagram.? Would anybody experienced in this agree that an isolator (as indicated in red) would address the Main/Starting staying "isolated" (at least in terms of the amp/sub)?? But, I also wonder that if I don't change wire #7 from main, then the (4) speakers connected to the stereo will also be pulling power from the Main/Starting battery. On some trips, I just make a point to start the EV. But sometimes I forget for a bit while I'm rocking out for hours... and the main/starting battery drains. Not ideal as it is not really meant to do that. |
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On Tue, May 28, 2024 at 08:01 PM, Droppin bombs wrote:
Prefer the ignition key position to still turn on radioI think you have a 93EV, so that's what I'm basing my response on.? On the later models, and probably yours, turning the key on turns on the radio.? Turning the key back off leaves the radio on until the key is removed from the ignition.? If that's true, then you don't need any other wiring or the rocker switch to isolate as you want to.? Just make sure the amp/sub are powered by the house battery and that the battery cu tout relay under the seat is working. -- Duane 05HD Rialta 227K Miles |
开云体育Having just wired up a new stereo, some of this is fresh in my mind. ?A few points:1. most modern radios have two power inputs (colored Red and Yellow). ?Red is usually supposed to be switched, and Yellow is "always on". ? I assumed that the amperage draw would mostly be on the Red wire, with the Yellow only being used for keeping the memory alive. ?However, with my newest radio install, I noticed the yellow wire is thicker than the red, which could suggest the opposite. ? In my installation, I have wired Yellow to the starting battery and Red to the House battery, but this may not be doing what I assume. 2. As you've discovered, simply having a switch in the circuit doesn't do what you want, as it ends up connecting the two batteries. ? You need a relay. ? /g/eurovanupdate/message/161861?is an old post that shows how, but I'll include it here again. (Note: as Duane points out, not sure if your 93 has this Accessory circuit or not?) Here's how I wired in a custom toggle switch and relay which switches the radio into three states: - Always On (house battery) - On with Accessories (house battery) - Always Off Parts: * A 12V relay? * a 3 position switch (On, Off, On) * a fuse (likely 10A to 30A, depending on your radio) * some wire (the trigger wire can be small, but use 14 gauge or thicker wire for the red lines * wire connectors & heat shrink tubing or electrical tape 1. First, find the nearest source of house battery 12V+. ?If you go up behind the fusebox, it's relatively easy to push a wire through the firewall and connect it to the relay in the engine compartment. 2. Add a fuse 3. Wire it up as shown in this diagram. ?? Note: switches and relays may have different?wiring diagrams, so double check your work.
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Duane