12V switched source

z06psi

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Gents,

I need two sources for switched 12V. One in the passenger kick panel and the other in the engine compartment fuse block. I have a voltage draw on the battery.

I have so much wiring between the boost stuff, air ride, and stereo that I have a wire draining my stuff.

I already measured between ground and cannot get an amp reading with the car off so I just unplugged everything from the system because it was not allowing the car to start.

The fuse taps I have in read 0V after the car is off and closed but for some reason I am still getting a draw.

TIA,

Andrew





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Brian_S550

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In the passenger side fuse panel, I tapped into the circuit described as “BCM memory” (fuse #36 IIRC) to power my ambient lighting retrofit. It only powers on when the ignition is in Accessory or Run mode. Can’t help with an underhood source that I know of.
 
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z06psi

z06psi

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z06psi

z06psi

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So I rewired a lot of stuff these last two days.

The compressors go straight to the battery now and so do the fuel pumps.

I also ran a new wire from the battery to the footwell area that feeds a relay. That relay is controlled by the window/mirror (so the key delay still happens for all systems) add a tap fuse for the trigger. The other side of the relay goes to the fuse panel I referenced above. The boost controller, Air ride trigger, DSP turn on all route to the extra glass fuse panel in passenger side footwell. Everything works and no more issues.
 

jasonstang

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Are you sure you are measuring it right? I mean you want to disconnect one of the battery terminals and put the meter in series in amp mode to measure current.
Maybe you just have a bad battery?
Best way for high current switched power would be use a relay and have a low current switched 12v to switch the relay.
 
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z06psi

z06psi

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That's what I did. I used a relay.

The problem really existed because I found out that my multimeter went bad so I was getting false voltage readings. Because of all that I just rewired everything and like it much better.
 

DavidEcobeast

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Just wanted to confirm that a mirco 2 fuse tap works in #23. I got the tap from my local Napa parts store. They even had micro 2 fuses. The tap fits nice and tight and did not require any modifications
 

dguzzi

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Old thread I know...but is there a switched 12v in the trunk? (2016)
 

jbeez

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I have a 2020, in my passenger footwell on the fuse panel, below the fuses are two female spots, an uninsulated male spade connector fits perfectly in those. I didn't test the one to the rear, but the position closest to the firewall is on with accessory power. I come out of that to an inline fuse and it works great. Presently using it to turn on my radar detector when i turn the car on, but it could easily goto a relay and branch out to as many things as you need.
 

sheoran05

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I have a 2020, in my passenger footwell on the fuse panel, below the fuses are two female spots, an uninsulated male spade connector fits perfectly in those. I didn't test the one to the rear, but the position closest to the firewall is on with accessory power. I come out of that to an inline fuse and it works great. Presently using it to turn on my radar detector when i turn the car on, but it could easily goto a relay and branch out to as many things as you need.

Can you share a picture if you don't mind? I couldn't find any spots.
 

jbeez

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