Radio install directly to battery

[Dawgriderdanny 10+ year member]

My mustang has a Bad General electric module (Gem) and it caused the radio to stop working. Fuse isnt blown. Is there a way to just wire up my radio straight to the battery. Pretty much just bypass the the electrical module in the vehicle. I figured i just shut off my radio when I m not driving or hook up a toggle switch.

Now my mustang is a 2000 model, pretty much a POS so its not guna matter much. BTW Its not stock radio, I have aftermarket put in.

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[CHEMMINS 10+ year member]

yeah you can....just wire the 12v power and acc to the batt.

 

[Sub Woofin 10+ year member]

and a switch to not drain your batt

 

[Dawgriderdanny 10+ year member]

Alright cool. Also i am going to have subs. Wont most radios lose all memory(fm favorites, clock, settings) if a toggle is switched off?

 

[Dawgriderdanny 10+ year member]

Also what about the cars factory amp?

 

[CHEMMINS 10+ year member]

If you leave the constant power direct, and put the acc on the toggle you can keep your settings.

What about the car's factory amp?

 

[Dawgriderdanny 10+ year member]

12v direct. Acc to switch, Got it

Do i need to supply power to the Amp?

 

[keep_hope_alive Premium Member]

i like getting an inexpensive 10awg amp install kit to bypass factory wiring for HU power. 10awg is large enough to minimize voltage drop while also letting you run other accessories off the power wire (if desired), like a factory amp.

you do want the HU to be ignition switched, but you can still bypass wiring with a simple relay. i've developed a diagram just for that:

the factory amp may have separate power, but you'll need to verify with a pin-out of the harness or a trusty DMM to measure voltage (if there is any).

 

[Dawgriderdanny 10+ year member]

Looks good. I do understand what this is going to do for me, but the diagram seems rather confusing to me

 

[CHEMMINS 10+ year member]

That is what a relay looks like....they are numbered those exact number too.

 

[Dawgriderdanny 10+ year member]

i know. But is that relay just for the head unit? I m confused about how to power the amp.

 

[keep_hope_alive Premium Member]

the BOSCH/TYCO relay will have a 30A contact. if you use a 10awg amp kit you'll have a 30A fuse and 30A of capability. that is plenty for the factory HU and factory amp. you just need to figure out how the factory amp is powered currently by finding a wiring diagram for your car. Ford Mustang forums are the best place for a wiring diagram since they are vehicle specific forums.

 

[Dawgriderdanny 10+ year member]

Thanks. Yeah i been on mustang forums all day.