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Hazza



Member Since: 10 Jan 2011
Location: North Yorkshire / Leeds
Posts: 208
United Kingdom 1990 Defender 110 Td5 HT Bronze Green
Only 2 years late...

It wasn't the brake cleaner that killed my alternator. I (foolishly) nipped the wire I ran to the rev counter under the alternator's cover when putting it together. The insulation failed and the short killed the alternator.

Replacement alternator in place, correctly routed wiring, and the rev counter works perfectly. 1990 Defender 110 200TDI Camper - now converted to Td5 power
Post #952697 16th May 2022 3:17pm
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Davy



Member Since: 16 Feb 2017
Location: DERRY
Posts: 39
Ireland 
I know it’s an old post but can anyone tell me if the (W) terminal is permanently live I’ve a parasitic draw I’m searching for.
Post #997789 27th Jun 2023 8:45pm
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Mountain_man



Member Since: 09 Dec 2011
Location: Right side of Offas Dyke
Posts: 756
Wales 
I think it may be permanent live. I am currently doing a hybrid built, repurposing my old Disco trayback into a "defender" ute for farm use. I have to build my own wiring loom so have been checking and labling all wires. The alternator wiring on the engine is as it was on the Disco so is wired for tacho. When checking the 3 wire outlets I did find the one which was for the tacho to be a permanent live.
Post #997808 27th Jun 2023 10:34pm
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rallysteve



Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2196
United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
W terminal shouldnt produce a voltage when the engine is not running. It outputs a raw a.c. voltage proportional to engine speed with a rms voltage of 6-8v

Steve 02' 110 TD5 Double Cab Rebuild Thread
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Post #997824 28th Jun 2023 8:15am
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1566
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
Anyone got a new link to this rev counter?
Post #997876 28th Jun 2023 3:22pm
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Davy



Member Since: 16 Feb 2017
Location: DERRY
Posts: 39
Ireland 
Thanks for the replies so I’ve had it checked out and NO It’s not live until the ignition is turned on.
Post #997914 28th Jun 2023 9:25pm
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