More than likely it’s trolley jack oil (which I have) but I wasn’t about to chance it!
Went through the same head scratching exercise myself refitting serpentine belt following head(s) change. Several months had passed and hadn’t a clue how it went.
Yep – it’s the alloy box with two bundles of wires attached. Point of interest – of the two fuses in the boot the 30 amp fuse protects pump circuit, but the 5 amp fuse has NO influence on hood operation. My hood is working again (touching the woodiest wood I can find [
]), so out of curiosity I removed the 5 amp fuse and tried raising the hood. Low and behold it worked as per normal !! So your guess is as good as mine what it’s protecting.
If you’ve got no LED lights then the problem has be a loss of 12v supply (+ 30 on wiring diagram), the supply to which ultimately originates at ignition switch. Stupidly, the diagram doesn’t appear to show the dash switch. Unless I’m missing something it can’t be +15 as shown on diagram. +15 sends 12v supply to (a) ecu and (b) coil side of pump relay (negative return to complete circuit and energise relay and start pump is via ecu). But ecu requires instruction from dash switch to raise or lower hood, so by my reckoning there must be two wires from switch not shown on diagram.