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excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5842

1999 Defender 110 Td5 SW Caledonian Blue

Additional engine earths

Following on from the thread http://www.defender2.net/forum/topic16122.html regard the fluctuating temperature gauge I have added an additional ECU earth.
I would also like to add some additional earth wires to the engine and the white earth block that resides behind the coolant bottle.
So I was thinking of.

Cable from the starter bolt to the chassis on the drivers side
An earth wire from the white earth block to the chassis

And finally an earth from the earth wire on the passenger side chassis that comes from the battery and run the wire to the engine.

Is there a good / preferred location on the engine to run the wire to ? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

31st Jan 2013 8:30pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6088

I have just fitted an ex disco Td5 engine into my project90.

This came with an "extra" earth cable, bolted just under the alternator. There's a couple of M8 threaded holes cast into the block, so I just bolted the other end of the wire to the nearest available bolt on the chassis (which was one of the bulkhead support brackets I think)

1st Feb 2013 7:50am

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5842

So far I have done an additional earth from the started bolt to the chassis where the body earth is and done and additional earth from the white plug behind the coolant expansion tank to the earth stud in the seat box on the drivers side.
Next will be another earth to the engine. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

1st Feb 2013 12:27pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Whilst adding extra earthing is a good practice, as a sparky it can be very, very difficult to diagnose and track down electrical faults when there are parralel earths present.
Just give any sparky the 'heads up' if he needs to work on your vehicle as they won't be shown on any diagrams he may be referring to. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

1st Feb 2013 3:03pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5842

That's a good thought. Will keep that one in mind - cheers 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

1st Feb 2013 3:05pm

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