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On my car the O2 sensor connector on the drivers side doesn't reach the holder on the side of the sump. I believe that I routed the harness incorrectly when I had the engine out. It's not causing any issues but I'd like to fix it whilst I'm fiddling in that area. RAVE has a "harness routing" section in the electrical troubleshooting manual but it's not very helpful.

GEMS harness routing

Does anyone have any pictures or a description of how the drivers side O2 sensor/starter branch of the harness should be routed? Does it go over the engine mount or under it? I don't see any clips that hold it so I may be missing them too.

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I'll have a look tomorrow as I intend getting under mine to see if I can sort out the lambda sensor heater error so I can try running it on E85 next time I'm in France.

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Looking towards the rear from the front of the car.

enter image description here

Loom goes underneath the engine mount, doesn't appear to be clipped anywhere, with the tails to the starter going upwards. Ignore the additional white cable there, that is for the extra 0-1V lambda sensor in my RH downpipe to feed the LPG system.

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Thank you, that is a great picture.

I went out tonight and re-routed mine to go under the engine mount. Everything now lines up perfectly.

I noticed two broken clips on the bottom of the engine mount that look like they are meant to hold the harness (they attach to the two holes you can see in your picture). I've cable tied mine into the two holes but it looked fine without.