"A" bunch:
⌀=4 mm, red - connect to X4/10 (wire connector), clamp 30/clamp 61 (Battery)




⌀=2.5, black/blue - to 1 glow plug
⌀=2.5, black/violet - to 2 glow plug
⌀=2.5, black/red - to 3 glow plug
⌀=2.5, black/yellow - to 4 glow plug



"B" bunch:
⌀=0.75 mm, brown - to ground, front left (near headlamp)






⌀=0.75 mm, black - to central electric box/fuse box, socket "S", clamp "6" (inner connection with socket "D", clamp "3" and from it to control lamp in instrument panel)
⌀=0.75 mm, violet - to central electric box/fuse box, socket "S", clamp "12"
⌀=0.75 mm, red/black - to central electric box/fuse box, socket "S", clamp "4"
See here: