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i have just changed my alternator on my 200tdi defender. went from 45A to 65A so i uprated the battery charge lead. all seemed ok. started the engine and at tick over it was working fine charging at 14.4 v. i was well chuffed so i took it for a run and about a mile down the road it began to splutter so i pulled over stopped then had a quick check of things and started it again. it ran for another half a mile and it did it again so i pulled over and stopped again. i then tried to restart it and got absoultly nothing no lights no hazards nothing electrical. is there a master relay or somthing like that i have blown? there were a couple of sparks that happened when i was fiddling about as i had left the old charging wires in but unconnected, bad idea i guess. any advice is much welcomed. thanks

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There's no master relay.

There's no master fuse, apart from the earth and supply leads, these smoke and then catch fire to let you know there's excessive current travelling through them :P

As you've been fiddling, its highly likely to be something you've disturbed. the spluttering was probably the supply to the fuel cut-off solenoid being disrupted.

Time to get the multimeter out and see what's what.

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the problen is that nothing al all works. noting on the ignition, the hazard warning lights, the side lights, the interior light, nothing at all so i was wondering what would be the first thing to check. the earths i guess?

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i have just changed my alternator on my 200tdi defender. went from 45A to 65A so i uprated the battery charge lead. all seemed ok. started the engine and at tick over it was working fine charging at 14.4 v. i was well chuffed so i took it for a run and about a mile down the road it began to splutter so i pulled over stopped then had a quick check of things and started it again. it ran for another half a mile and it did it again so i pulled over and stopped again. i then tried to restart it and got absoultly nothing no lights no hazards nothing electrical. is there a master relay or somthing like that i have blown? there were a couple of sparks that happened when i was fiddling about as i had left the old charging wires in but unconnected, bad idea i guess. any advice is much welcomed. thanks

The fact that your asking this means that it aint caught fire ... which is a good start.

If nothing at all works then check that the battery post clamps are both on properly and havn't been tightened when not fully home.

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Guest WALFY
i have just changed my alternator on my 200tdi defender. went from 45A to 65A so i uprated the battery charge lead. all seemed ok. started the engine and at tick over it was working fine charging at 14.4 v. i was well chuffed so i took it for a run and about a mile down the road it began to splutter so i pulled over stopped then had a quick check of things and started it again. it ran for another half a mile and it did it again so i pulled over and stopped again. i then tried to restart it and got absoultly nothing no lights no hazards nothing electrical. is there a master relay or somthing like that i have blown? there were a couple of sparks that happened when i was fiddling about as i had left the old charging wires in but unconnected, bad idea i guess. any advice is much welcomed. thanks

I had this same problem back along. I rerouted the cables. As I drove the main batt cable fell on the exhaust and then took it's time but then melted through the plastic. Shorted out and KILLED the batt in about a second flat. Sorted the cable out and cost me a new batt.

Just a thought as you say you've been playing with the main cables

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