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Auto electrician recommendations please


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Building your own loom for a Series / Defender is not that difficult these days.

We have done it several times and I'm about to start wiring up the Hybrid.

As long as originallity is not important, there are a few improvements to be amde over the standard thing.

And places like "http://www.carbuildersolutions.com/uk/" make very nice stuff to have your Defender be real modern...

Bon Couarage !

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On 02/03/2017 at 10:04 AM, daveturnbull said:

Why not post up your thoughts and how far you have got with the design on this forum? I'm sure many of us would be able to offer advise and guidance.

Ta very much... well here goes....

I'm working on a veg oil conversion for our (1997) 110 defender and have some ideas of how I'd like to control it but my auto electric knowledge is poor and I was wondering if anyone could help? I've contacted a few auto electricians and no one wants the job.

I have bought a stack pro water temp gauge which can be programmed to act as a switch once a certain temp is reached:

52mm Auxiliary Gauges: Pro-Control - http://www.stackltd.com/instruments_pro_control.html

And an on (veg) / off (diesel) / on (purge) 'master' carling switch

It's a twin tank system so start on diesel and once the water (engine) temp gauge reaches 70c the engine switches to veg oil.

A minute or so before the journey's end we will switch to 'purge' and diesel will be drawn from the diesel tank but the unused fuel will be returned to veg tank to clear the lines of veg oil ready for the next start up.

There are 3 x 3 way solenoid valves and a 12v diesel pump (veg oil is pumped via a mechanical pump and will always be in operation).

On / Veg mode: 1, 2 and 3 and diesel pump is powered = veg oil drawn from and returned to veg tank in its own loop and diesel is drawn from diesel tank and used to run vehicle. Once stack pro water temp gauge reaches 70c: 1, 2 and 3 and diesel pump become unpowered = veg oil drawn from and returned to veg oil tank (engine now running on veg oil).

Off / Diesel mode: 1, 2 and 3 and diesel pump are powered = diesel drawn from and returned to diesel tank.

Purge mode: 1 and 2 are powered, 3 is unpowered = diesel is drawn from diesel tank and returned to veg tank.
Although diesel mode is activated in the carling switch off position the solenoid will be powered as the vehicle will be in veg mode most of the time and will use less battery power this way. 


 

fuel system.jpg

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