50 Vault-Tec C.E.O.
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Fallout: New Vegas 2 ability
targetsElectronic doors

Splicing is an action allowing the player to repair, hack, and upgrade electronics, including robots, terminals and electronic doors.


To access the splicing interface, you must find the control panel for the device. For electronic doors, this will be on the wall somewhere close to the door, but only on one side, not both. For terminals, it will either be on the back or the side. For robots, it will be in various places depending on the model. Once approached, you must break open the panel. If the owner of the machine notices this, they will turn hostile unless you are an ally and/or got permission beforehand. If splicing a robot, you must be careful that it does not detect you as well, requiring you to either approach stealthily or using an EMP weapon on it.

Once open, you will immediately enter the interface. Note that, unlike hacking and lockpicking, splicing is done in real time, meaning there is still a chance of discovery.


The splicing interface is a square, the size of which depends on the difficulty (the higher the difficulty, the smaller the square). At the center of the square is two to four power nodes. Connected to the nodes are multiple wires that run to the outputs at the edges of the square. The wires also wrap around various pegs that fill the rest of the square. Only two wires can be wrapped around each peg, on opposite sides. This means, that the greater the difficulty (and thus the smaller the square is), the less pegs there are and the harder it is to move wires around. To the right of the interface are status lights, doors only have one light, for their lock, terminals have lights for their OS and password, while robots have multiple lights for their weapons and other systems.


To actually splice, the important part is the power nodes. While the nodes are usually the same color (unless your Repair skill is high enough), the nodes are either positive (blue), negative (red) or neutral (yellow). The outputs at the edges of the interface control different systems: power, weapons, locks, etc. Which node is powering which output controls how the machine works. For instance, for all machines, if the power is connected to the negative node, the machine is offline and can not do anything. The only way to power it on is to use a wire to connect the output to either a yellow or green node.

To accomplish this, you must cut two wires, unwrap then rewrap around pegs to reposition them, and then mend these two wires to form a path between the node and the desired output. For this reason, depending on difficulty and your skill, it may be difficult, if not impossible, to make certain connections because of distance between the output and node, other wires getting in the way, or how many wires are connected to the different nodes. For instance, while it is possible to splice a sentry bot to follow you with a low skill, it will probably require you to shut off one of its weapons.

Sometimes there is more than one wire for certain systems (E.g. two power wires), in which case the system will use which ever wire is connected to the better node. This will require you to cut or switch both wires to turn a system off/downgrade it, but only require you to mend one wire if you want to turn it on. To test which outputs control which systems, you can simply cut the wire. Doing so, should result in one of the lights turning off (meaning it's that system), all of the lights turning off (meaning it's the power), all of the wires flickering (meaning that's the power but there's another one), or nothing happens at all (meaning that's a blank wire).

The different node and output combinations are:

Positive (blue) Neutral (yellow) Negative (red) Wire cut
Power Power On Power Off
Lock Unlocked Locked to all but owner Locked to everyone
Positive (blue) Neutral (yellow) Negative (red) Wire cut
Power Power On Power Off
Password Full difficulty -1 difficulty (Min. Easy) -2 difficulty (Min. Very Easy) Can't be unlocked
Operating System Fully functioning Some words/images are messed up Doesn't function
Positive (blue) Neutral (yellow) Negative (red) Wire cut
Power Power On Power On, -1 Agility Power Off
Movement Follows closest ally Patrols area Stays at current location Stays where is, -2 Agility
Friend/Foe Allied to player Allied to owner's faction Hostile to everyone
Weapons Online Online, -50% damage Offline


The Repair skill has a major impact on splicing. Outputs and wires are, while random, usually placed closer to specific nodes if you're Repair is the same level or higher compared to the panel. However, Repair adds other features:

  • At 50, power nodes will be colored showing what type of node they are.
  • At 75, outputs will have icons added to them (lightning bolt for power, gun for weapons, etc) and will label what specific system it is for if you hover over it.
  • At 100, you can upgrade the power nodes of robots. If the right output is connected to this upgraded node, green nodes will result in weapon damage increases, faster movement speed, better AI, and yellow nodes will have any negative effect removed.

See also

Main Document