I have a 1990 Defender 110 with a 2.5na and am replacing the engine with a Defender 200tdi engine. I thought I might as well replace the main wiring loom as I am removing the entire engine, gearbox & transferbox.

Will also get a chance to tidy up the wiring in the engine bay. Just a little bit confused as already the original 200tdi engine wiring loom is there with the engine, do I need to replace this to a new one 200tdi one and will this new one fit with my new main wiring loom.

Where can I get the main loom from and what is the part number? Would appreciate a speedy reply.

putting a 200 in really doesn't warrant changing the loom - is the existing loom that bad ?

the only significant difference is that the 200 glow plugs take their feed via a timer/relay whereas the older engines GP feeds come direct off the ignition switch - 200 fuel shut off solenoid needs a switched live, the starter/alt is just bog standard

Sean said:

putting a 200 in really doesn't warrant changing the loom - is the existing loom that bad ?

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Yes the loom of what ever is left is all hard and brittle. the previous owners (am the 4th) have gone and cut the loom in many places. Hence I need to replace it with a new loom.

Prith said:

Yes the loom of what ever is left is all hard and brittle. the previous owners (am the 4th) have gone and cut the loom in many places. Hence I need to replace it with a new loom.

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that'll keep you busy