Thanks David,
However I noticed in another of your posts you prefer 5mm square to the lights (10 AWG, 2.5 dia?) - do you have a suggested loom other than the discontinued DL2 that comes with this out of the box plus the 6mm from battery to relay? I'd like to remove the wiring from any potential issues I encounter from the Nissan ECU controlled alternator.
Also is a 30A loom (relay / fuse) sufficient or is 40A preferred?
"Our globes are rated 5000 lumens at 13.2 volts so I have found the minimum, EG: Piranha loom NR1 which has 3.5mm square wire from the relay to the lights has approx 0.7 volts drop to each light therefore with about 13.8 /14 volts at the battery with the engine running the volts are pretty much ideal.
However we recommend minimum 5.00mm square which gives approx 0.3 volt drop with th 150watt lamps.
This then allows for longer wiring runs or a lower battery voltage output. The supply wire to the relay from the battery needs to be
6.00mm ."
Your right I did say that, and was wrong!. It was just recently I found out the rolls of wire that were used for the voltage drop tests had been incorrectly marked with the wire sizes. Hence why the over sized stated wire. No excuse ,I should not have missed it. This was found due to the lack of correlation between the AWG specs and the local wire specified in DL1 loom and the specs on my rolls of wire.
The wiring diagrams have been redone and the DL1 is the minimum to use 12AWG = 2.00mm dia copper / 3.5mm square /classified as 2.00mm wire (0.7v drop).
Or as I use 11AWG = 2.3mm dia copper / classified as 3.00mm? (0.4v drop). If you go bigger than that you will seriously shorten the lamp life, (but you get noticably more light output) thats the trade off. Yes you do need a larger wire beteen the battery and the relay as it carries the current for both lights. In the DL1 it is 2.3mm dia / 3.00mm wire. This works well.
I haven't found any better loom than the DL1 since the DL2 was discontinued. You will have to make your own if you want larger.
A 30amp relay will do the job as the lights draw about 25amps between them. A genuine 40 amp relay just gives you a bigger safety margin.(Note: we do not know these days if it just a different number printed on the relay as are a lot of items coming out af Asia)
The best way to reduce any problems is keep your joints to a minimum and sealed from moisture and the earth wire (neg) from the lights goes back to the Neg battery connection to the body, not a short wire to the bull bar as you do not know the resistance through the chassis bolted connections especially over time.
This should have no effect on your ecu controlled system.
MacG
