Next up, I made a start hacking into the wiring looms. Since a lot of electrical stuff will be deleted, relocated or modified, a lot of wiring can go as well. Less is more. I thought about building a new loom myself, but Toyota did a great job and I think a neatly insulated OEM loom looks great as well. What you see below is the main interior wiring loom on the attic floor, the way it sits in the car. The large blue plastic part on the left lives behind the dashboard. The branch towards the centre of the picture (along the pliers) is the centre console (HVAC, radio, up to hand brake). In front of the home trainer you see the ABS ECU. That entire branch is ABS related and crosses the floor pan just before the rear seats. The stuff in front of the ATL fuel cell container is for rear lights, antenna, fuel pump, etc. Next to the ATL container you can see the FRP hatch, btw:
If you check out the Toyota wiring diagrams, it looks like this:
I have removed the following wiring, connectors and components:
A37 ABS ECU (L/B)
A38 ABS ECU (L/B)
A39 ABS Speed Sensor Rear LH (L/B)
A40 ABS Speed Sensor Rear RH (L/B)
A41 Auto Antenna Control Relay and Motor
A43 ABS Deceleration Sensor (All–Trac/4WD)
B7 Back Door Courtesy SW (L/B)
D8 Door Courtesy Light LH
D9 Door Courtesy Light RH
D10 Door Courtesy SW LH
D11 Door Courtesy SW RH
D16 Door Speaker LH
D17 Door Speaker RH
F14 Front Tweeter (Speaker) LH
F15 Front Tweeter (Speaker) RH
I13 Interior Light
L4 Luggage Compartment Light (L/B)
P4 Power Seat SW
R14 Rear Speaker LH
R15 Rear Speaker LH
R16 Rear Speaker RH
R17 Rear Speaker RH
R18 Rear Tweeter (Speaker) LH
R19 Rear Tweeter (Speaker) RH
R24 Rear Wiper Motor and Relay (L/B)
R25 Remote Control Mirror LH
R26 Remote Control Mirror RH
S11 Sun Roof Control Relay
S12 Sun Roof Control SW and Personal Light
S13 Sun Roof Limit SW
S14 Sun Roof Motor
And the remaining 'combination meter' stuff left behind after installation of the STACK dash display.
The following will be relocated (shortened):
F 18 Fuel Pump (All–Trac/4WD)
F 19 Fuel Sender (All–Trac/4WD)
Instead of just cutting wires and creating a ghetto short circuit fire hazard, I've use lock picks to depin the connectors for an ultra clean result. It also was the only straightforward way to splice all surplus wiring out imo - just follow the loom from the actual component back to the control button, power source, ECU, etc:
ABS wiring gone:
Some of the interior wiring is connected to the main engine, or engine bay loom (for instance: AFM to ECU) as well. There are 3 main looms in the car. In order not to get confused later on, I decided to take the related stuff out the other looms right away. It may look like chaos, but with wiring diagrams on the computer screen, some music and a drink I actually enjoyed doing this job! Welcome to the jungle:
I will make a complete list of everything I have removed later on, but here's the mandatory OCD overview of what I've taken out so far. Top/right block is from the interior loom, left column is from the engine bay loom and the lower row all comes from the engine harness itself:
What you see in the photo above is over 11 kg of wiring and components with (a little bit) more to come. Weight removal overview from the start of this thread:
Sound deadening from interior: 10+ kg
Underseal from bottom (more to come): 6 kg
Carbon bonnet (difference from stock): 10 kg
Carbon doors: TBD
Carbon mirrors (difference from stock): 2+ kg
Double plating: 9 kg
Electrical wiring: 11+ kg
Total removal so far (ex doors): 48+ kg.
Oh, add another 15+ kg for the sunroof assy! That's well enough to compensate for the roll cage already! Rene happy.