Switched power from an empty Engine Compartment fuse block

[artsci]

The Engine Compartment fuse block has quite a number of unused or empty fuse slots. Does anyone know which may be powered when the ignition is switched on? I want to power an accessory this way -- on when the ignition is on, off when off.

[rbuchner]

check with a volt/ohm meter. Power off- no reading, power on -reading 12 v is the one you want.

[artsci]

I was looking for the easy solution -- someone who already knew. But I'll do the testing and post the results for, assuming someone doesn't already know and beats me to the punch.

check with a volt/ohm meter. Power off- no reading, power on -reading 12 v is the one you want.

[guyflyguy]

Make sure you use a proper fuse for the circuit you decide on. We don't need any more Volt electrical fires!

[Raymondjram]

The Engine Compartment fuse block has quite a number of unused or empty fuse slots. Does anyone know which may be powered when the ignition is switched on? I want to power an accessory this way -- on when the ignition is on, off when off.

Use a simple 12 V test light that has a probe connected at one end and a ground clip at the other (or make your own). It is faster and cheaper than a volt meter. I have both so I know which is easier to use.

[larry4pyro]

Make sure you use a proper fuse for the circuit you decide on. We don't need any more Volt electrical fires!

Absolutely agree. Make sure you pick off power from the correct side. One is before the fuse, this is the wrong one, the other is after the fuse, this is the correct one.

[cbrett]

Mini fuse position # 3 is shown as "not used" but can be tapped by using a mini fuse "add a circuit" fuse holder (available at most auto accessory stores) and is switched on with the ignition. However, I had to drill a small hole in the edge of the fuse box to snake the lead out to connect to the auxillary led lights I am adding. Be sure to seal the hole to insure no moisture enters the fuse block. Good Luck!

[artsci]

Thanks much. That info will save me some trouble!

Mini fuse position # 3 is shown as "not used" but can be tapped by using a mini fuse "add a circuit" fuse holder (available at most auto accessory stores) and is switched on with the ignition. However, I had to drill a small hole in the edge of the fuse box to snake the lead out to connect to the auxillary led lights I am adding. Be sure to seal the hole to insure no moisture enters the fuse block. Good Luck!