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Engine bay loom identification

Posted: 08 Apr 2026, 18:12
by shampooefficient
Good evening gang.

Being a lucky soul I am now in charge of rebuilding the mother in law's van after several months laid up.

Dropped the engine ready for replacement and am sorting out the loom, mainly redoing all the sheaths. Before I unplugged it I did label everything, however the van is outside and the wet weather has ruined 90pc of my labels. Lucky there's not too many on a 91 diesel...

To be fair there's no guarantee that the last owner had it right. The woodscrews holding the air box and rear lights in are a good indicator of his precision workmanship.

Please could you help me with where these ones go? All part of the same wrap coming from the fuse box.

Black, single sheathed wire, spade connector
Yellow single wire, rubber cap, spade connector
Blue and black single wire, rubber cap, spade connector

Brown/ blue and white wires, double, to red two-pin plug

Thick red single wire sheather, small ring terminal

Brown / red and yellow wires, double, to black two pin plug

Thanks in advance!

Re: Engine bay loom identification

Posted: 08 Apr 2026, 23:34
by Robsey
Black, single sheathed wire, spade connector
Ignition live feed -
Electro-magnetic cut off.

Yellow single wire, rubber cap, spade connector
Oil Pressure (buzzer of doom) [1.8 bar]

Blue and black single wire, rubber cap, spade connector
Oil pressure warning light [0.3 bar]

Brown/ blue and white wires, double, to red two-pin plug
Glow plug system engine temperature sensor

Thick red single wire sheather, small ring terminal
To stud in junction box - other fat reds to alternator.

Brown / red and yellow wires, double, to black two pin plug
Coolant temperature sensor.

If you need a wiring diagram, check out the syncrosport website.

Re: Engine bay loom identification

Posted: 09 Apr 2026, 07:16
by shampooefficient
Fantastic - thank you ever so much!

Re: Engine bay loom identification

Posted: 09 Apr 2026, 22:51
by Robsey
Glad to help...
I am a wasserboxer person normally so the diesel specific wire colours threw me briefly.

But the Syncrosport information filled in the gaps for me.

All the pins (spades and bullets) are readily available from the usual suspects.
I got all mine from Brickwerks, when I replaced virtually every connector pin on my digijet loom.