Before I can do anything with marrying the SVX wiring harness to the Impreza harness, I have to strip out the parts of the SVX harness which I need. Literally it will end up being about 20% of the wires, as I said before. The project for today was to get the harness depinned from the connectors for the Powertrain Control Unit (PCU).
To depin the harness, you have to figure out which connectors you actually have to depin. It isn’t too difficult to figure out if you strip the harness out yourself because the four connectors are inserted into the PCU. The strange thing about them, though, is they are colored bright yellow. In most cars with a Supplemental Restraint System (SRS), you’d expect anything bright yellow to be associated with the air bags. In this case, you’d be wrong.
Here are some pics of the aftermath. These first four images are the tags after I’ve tagged all of the wires going into the connectors.
I really had to be careful with the following wire … I was afraid it might explode :o)
In the following image, you can see the firewall plug/grommet. I was hoping to be able to pull all of the wires free I’d need from the rest of the wiring harness without making a mess of everything, but it appears I’ll need to pull this apart as well. In the center of the plug there is a bit of sealant which is binding all of the wires together. I won’t be able to work around this, so it’s all going to have to come apart.
Here are the connectors I was telling you about, right after I depinned all of them. They are looking mighty baren.
The following is the pinout guide I’ll be using to select the wires and connections I’ll be needing for the swap. I’m using the image curtesy of taiden on YouTube.