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NoDo$h
Member Since: 02 May 2006
Location: Finding new and exciting ways to milk badgers.
Posts: 19689
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| Where to take switching current from main beam circuit? |
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Going to make a start on wiring up my LF140s this weekend and wonder if someone can point me at a convenient place in the cabin to take the switched feed from the main beam circuit so I can ensure my LF switch only has current when main beam is on? Have the rest of the wiring worked out, just not that bit. Not keen on cutting into the loom if I can avoid it. Have serached all kinds of combinations of +switched +lights etc and now have RSI  I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
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 9th Jan 2010 11:42 am |
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bobbycrispbox
Member Since: 15 May 2006
Location: Where women glow and men plunder
Posts: 2580
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I don't think there is anything in the cabin that gives you this, it has to come from one of the front light connectors and through any available grommet.
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| 9th Jan 2010 11:58 am |
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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 706
 
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One way or another, you will have to run a wire between the cabin and the engine bay. So why not pickup power from a halogen high beam (solder a wire onto the globe connector) and run that to the relay, then run a wire through to the cabin switch and ground the other side of the switch under the dash, thus providing a switched earth path for the relay. Its electrically safer than running a live wire through the firewall to the relay too.
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| 9th Jan 2010 12:21 pm |
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NoDo$h
Member Since: 02 May 2006
Location: Finding new and exciting ways to milk badgers.
Posts: 19689
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Wondered if I could take something off the fuse panel. Main Beam fuse is in there, so thought it might be possible to do something here? I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
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| 9th Jan 2010 4:12 pm |
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kernowexpeditionaryforce
Member Since: 15 Jan 2009
Location: Kernow
Posts: 329
 
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from memory under the engine bay fuse box theres an unused plug the feeds the relay for adding aux driving lamps, the OE style switch is fitted to the left of the speedo display and a wire is added to a module under the glove box fuse panel,
it then needs enabling to make that output work.....
would be as easy to take a switching feed off the loom to the headlight and back through a gromet as mentioned!
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| 9th Jan 2010 11:42 pm |
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bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
 
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Take a wire from one of the coil pins on the relay to the headlight main beam wire.
Then take the other pin on the coil realy through the grommit into the car through a switch and from the other side of the switch to GND.
The contactor part of the realy , obviousley a fused feed to one side and the other side to the LF's
By adding the switch into the coil GND side of the realy and the main beam feed wire to the other side of the coil on the relay , not only will the LF's only work with the main beam you can issolate them with the switch if you dont want them on 
At the same time you only have 1 wire through the grommet 
Pete
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| 10th Jan 2010 12:36 am |
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bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
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Humm just re read after posting my fast reply without reading the full thread and before i go to bed and realised GraemeS already said the same lol.
Great minds think alike GraemeS
Pete
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| 10th Jan 2010 12:39 am |
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