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trailbear

Member Since: 14 Sep 2016
Location: Scotland
Posts: 405

Blue Sea Fusebox

Ladies / Gents

I intend to fit a blue sea fuse box to cater for some other electrical items that I
want to fit to my 300tdi Defender and I am looking for advice as to where I should take
the live feed from. I had thought possibly of taking direct from the ignition
switch system but I am open to other suggestions for the feed.

What amp cable would you suggest for the feed to the fuse box itself and would it be advisable to fit relays for the electrical accessories that I am looking to fit. ( Kenlowe Fan / Electric Front Windows / Heated Front Screen )

As always any advice is greatly appreciated.

11th Mar 2021 9:35am

jimbo55

Member Since: 15 Jul 2020
Location: Midlands
Posts: 399

For the accessories that require an ignition live I have taken a feed from the cigarette lighter - mine is a Td5 but I’m pretty sure it’s the same on 300tdi’s

I have used a relay in the battery box so that I can draw the required current - the relay is switched on by the cigarette lighter feed and then the rest of the accessories are fed from the battery to the fuse box

As for the amp capability of the cable that depends totally on the current draw of the accessories, but always go for the safer option, much better to use higher rated cable than have a fire

11th Mar 2021 11:17am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5707

2006 Defender 110 Td5 USW Zermatt Silver

If you intend to run items such as a heated screen which wants LOTS of power I would suggest your power comes direct from the battery or similar, but is then controlled by a relay switched with ignition. Not many ignition power sources are going to be big enough to power everything you are listing.

11th Mar 2021 11:26am

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5843

1999 Defender 110 Td5 SW Caledonian Blue

When I did my heated seats, I used a 70amp voltage sensing relay located in the battery box that kicks in only when the engine is running.
I intend on using this for other feeds such as mirrors and eventually heated front screen. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

11th Mar 2021 11:42am

trailbear

Member Since: 14 Sep 2016
Location: Scotland
Posts: 405

I’ll need to have a think about how to do this properly then.
I had thought about having an auto spark fit this but due to recent experiences with 2 local
So called experts, I think my dogs would probably make a better job. It just seems to be that true time served
Tradesmen are hard to come by now.

11th Mar 2021 12:35pm

jimbo55

Member Since: 15 Jul 2020
Location: Midlands
Posts: 399

Excuse the rubbish back of an envelope drawing, but you will ideally want something like this

Click image to enlarge

11th Mar 2021 1:52pm

trailbear

Member Since: 14 Sep 2016
Location: Scotland
Posts: 405

Thanks very much for that, it may be on the back of an envelope but it actually makes it
much clearer for what I am hoping to achieve

11th Mar 2021 3:12pm

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