Key On Power under the hood

Hey All, I am putting in a aux panel, and would really like to utilize Key on power(just for signaling), but my google foo is failing me. Where are you tapping key on power under the hood?

Thanks!

 

Easy spot is the Towing circuit, grey 25A fuse. This powers a 12v line in the 7pin trailer plug.

the reason I like this is because the damage risk is basically zero. If you manage to mess it up, it won’t affect the truck driving home

 

This circuit is Ignition, not just accessory. So the truck has to be running. That’s another reason I like it; no risk of running the battery down

 

Are you using a Fuse Tap? How do you like that?

 

Add-a-circuit adapters are the only way to go for sure. Keeps the original circuit fused properly and protects the new circuit you’re adding as well. Installs easy and removes easy

 

Destin, your Taco must be special. That fuse is HOT always, it's connected to the Alternator buss bar.

 

You know what, you’re right. Good looking out

I had wires crossed in my head.

I have a 12v charging station in the bed of my truck and I knew it was only on with ignition, but that’s because I’m using the 40A Trailer battery charging circuit back at the 7pin. NOT the 25A Trailer circuit that goes into the combi-meter. Turns out they are different and in the 6 years since I installed it, I forgot that.

 

Here's a choice at the engine bay.

 

Or this:

 

Parts:

 

if you don’t want to splice any factory wiring, I used this quite often back in my stereo installer days. It creates a trigger when it senses a higher voltage (which means the alternator is running)

 

You don't like the jumper harness on post#10?

 

That depends.
Can I buy one of each connector and one of each pin and a crimping tool and 2 short lengths of 10? 8? gauge wire

all for under $25

 

If I am understanding what you are saying here

get connectors 90980-10915 and

$13 90980-10916 6" 12ga Harness New

90980-10916, along with connectors 82998-12370 and

$10 82998-12380 90980-10916, 6"es 12 Gauge Wire Harness

82998-12380, to make up a jumper that basically goes in between the factory harness? I really like this idea, but are those the right connectors for the jumpers? they both appear to be female connectors?

 

Yes
Yes
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