Is this plug for fog lights?

I'm having trouble getting my bearings in your photo. Is this behind the front bumper, and is the black connector down at the bottom the one (eight poles, I think?) that connected to the bumper harness, and you disconnected that when taking the bumper off?

If so, that white one is a puzzle to me. I'm not seeing it in my 2010 US wiring diagram, but then (a) there was a face lift in 2012 that could have changed things, and (b) your profile doesn't say if you're in the US or another region.

I'm not familiar with the speaker-looking thing behind it, either. Is that for the vehicle proximity notification spaceship sound?

In my 2010, anyway, the fog circuit goes through that 8-pole connector at the bottom, and the bumper harness is where the connectors for the fog lights are. It's a light-green wire through position 1 of the eight-pole connector (again, according to a 2010 wiring diagram).

 

PNC 82113 is the harness that goes in the bumper all right. I see there are three versions listed for a 2013 Prius, and the -47180 version says it's the one that came in the cars with LED headlights, and I think those are the ones that got the factory fogs, so that's almost certainly the one.

 

I did buy a version of the 82113 harness, which came in three flavors for 2010. I'm pretty sure I bought the one that came in cars with LED headlights, which were the ones that also came with fogs. It wasn't the cheapest one (missing fog wiring, that was the one already there), and it wasn't the most expensive one, with forward radar wiring. But the specific part numbers for 2010 and 2013 may be different.

Funny that they call it "headlight wiring harness" in the catalog, when I think it really serves all the bumper gizmos except the headlights, whose connectors I think are part of the engine room main harness.

 

I bought some wire (even bought green, to match the diagram), and ran it from 2C pin 8, poked through the firewall grommet, and followed the engine wire harness to CA1 pin 1 behind the left fender. That way an unmodified 82113 harness with the fog wires just plugs right in.

I'm not sure how to read your third paragraph.

 

On the instrument panel junction block, which is the thing with fuses on its bottom face. 2C is one of the connectors on the face that faces the driver. (2A and 2B are harder to reach, on the face that faces the firewall.)

 

CA1 is behind the left fender, at the left corner of the bumper, where the matching plug on the bumper wire harness is.

 

2C is a connector on the instrument panel junction block.

Unless you plan to relocate the instrument panel outside the cabin, getting from 2C to CA1 will require penetrating the firewall.

Thanks for the report about the stalk. I've started a list on the wiki for part numbers that should fit.

 

Position 8 in connector 2C takes a non-waterproof, 1.5 mm female terminal, 82998-24350.

Position 1 in connector CA1 takes a waterproof, 2.3 mm series II terminal. CA1 is a connection between two wire harnesses, so both a male and a female terminal are involved. The wire to be added needs the male one (the female one will be part of the 82113 bumper harness that has fog wiring). The male one is 82998-12430.

Toyota will sell the terminals with short lengths of wire preattached. They'd be attached to your own wire using the yellow crimp sleeves, as Elektroingenieur kindly described here.

 

The picture shows "double lock type / housing lance". So, there's a secondary lock, a plastic bar across the whole connector, which you can see having been popped slightly downward (in the picture above). Usually there are a couple of notches along it where your removal tool can fit to pop it. You might have to remove the mating lever handle from the connector to get access to that secondary lock.

Once that is released, you can see the individual terminal lance is a part of the plastic housing, and you release it by inserting your removal tool from the front. But I'm guessing you don't have a terminal in there to begin with ... ? So you probably only need to deal with the secondary lock.

You can find all these pictures and descriptions in the wiring diagrams online, by the way, in case you have this kind of question and nobody comes by right away with an answer.

Toyota Service Information and Where To Find It | PriusChat