axtx wrote: ↑Tue Dec 17, 2024 11:32 am
This has been an amazing read! Thank you for adding so many photos!
Would love to know your process behind wiring and how you went about knowing where everything goes
Glad you have enjoyed the read- always like using pictures to demonstrate a bit of the story with any posts i do anywhere.
So the methodology i used towards the wiring was- i started out removing the engines and determining where the TFSI plugged back into the car on the donor EOS to then link back in- IE T94 on the ECU from the body and several other wiring connection points in the right hand side of the engine bay- from there because i knew that T94 also existed on the diesel caddy as a connector, i pulled all the wiring diagrams for both the caddy and the EOS, and proceeded to create a pinout in Excel, and laid the T94 out next to eachother in the spreadsheet, and then created a third table with conversion- saying the old caddy pin on T94 moves to where for the EOS TFSI ecu- this assisted a lot as a starting point but i quickly lost motivation just repinning the ecu. I naively thought that "Surely it will just be T94" but it wasnt the case, So to get the project moving again i decided to install the Engine and gearbox into the caddy to give me something tangible progress wise to see, and then determine which connectors were in the EOS that werent in the caddy and started stripping the Loom segments as pigtails out of the EOS and pinning them in as necessary using the wiring diagrams to create diagrams on the pins usage, where it needs to go and what pin on the connector its going to, depinning where i could, splicing extra wire in where needed and cutting where necessary.
Eventually i reached close to the end of what seemed like endless wiring- when i came into this project some people said that there was several hundred hours in wiring alone for the first time round, and i can verify that, but as a project i wouldnt change doing it myself at all, ive learnt a lot, and the best thing that i did was simply go- one pin at a time, and it makes it a heck of a lot easier to manage, as when you look at the project as an overall whole on the wiring side it is extremely daunting.
I slowly got faster with each pigtail i ran, with the last couple only taking me 30-40 minutes each to put in, but more time going into research to ensure that where i was reinstalling them was going to work for the caddy itself, again the diagrams and my spreadsheet being king- and for this build in future troubleshooting if theres any issues allows me to troubleshoot from what i did exactly as i tried to take notes on how i ran specific wires and where they are physically run in the loom/cabin/engine bay for ease of troubleshooting later.
Currently where i am up to is that i no longer have any errors related to the engine swap itself thankfully, i only have a few lights related to the ABS which is the usual tricky bit to sort out, so ill be working on that over the next little while to ensure that i can get it error free before it goes off to Engineering here in New South Wales ahead of registration- goal is to have it on the road in February with plenty more mods to take place after the registration period such as custom exhaust with catted downpipe, facelift front end, lowering springs and axle flip, rear interior fitout, and carpet in the front cabin area, plus any other little mods i find along the way.
2013 Caddy Runner- 66KW manual- 2007 SWB Diesel- currently being converted to TFSI