Aux LED Light Wiring Help - BMW Luxury Touring Community
 
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post #1 of 8 Old Sep 8th, 2014, 2:02 pm Thread Starter
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Aux LED Light Wiring Help

Itís time for the biennial K1200LT maintenance, repair, and farkeling extravaganza and among my planned farkels is something that has me confused. I want to add some auxiliary LED lighting to the bike which itself is easy enough, but I want to do something that I donít know how to do:

1. I want them to come on with ignition but be able to turn them off with a switch if I donít want that (easy enough)
2. I would like to be able to switch them on when the bike is off, fork locked and key out of the ignition.

Now itís very likely that the solution is a whole lot easier than I think but I figured I would put it out there to smart people rather than engineer this myself. Iím good with the soldering iron and crimpers, but I really have some lack when it comes to electrical systems. If someone has a minute to sketch up a diagram or let me know how/if this can be accomplished I would appreciate it. Also since itís LED Iím assuming I wonít need a relay?

Thanks in advance.

-Steve

2000 BMW K1200LT
2000 BMW R1200C
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post #2 of 8 Old Sep 8th, 2014, 5:20 pm
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Re: Aux LED Light Wiring Help

Quote:
Originally Posted by copperstatetour View Post
It’s time for the biennial K1200LT maintenance, repair, and farkeling extravaganza and among my planned farkels is something that has me confused. I want to add some auxiliary LED lighting to the bike which itself is easy enough, but I want to do something that I don’t know how to do:

1. I want them to come on with ignition but be able to turn them off with a switch if I don’t want that (easy enough)
2. I would like to be able to switch them on when the bike is off, fork locked and key out of the ignition.

Now it’s very likely that the solution is a whole lot easier than I think but I figured I would put it out there to smart people rather than engineer this myself. I’m good with the soldering iron and crimpers, but I really have some lack when it comes to electrical systems. If someone has a minute to sketch up a diagram or let me know how/if this can be accomplished I would appreciate it. Also since it’s LED I’m assuming I won’t need a relay?

Thanks in advance.
Somewhere I have an Autoswitch which is yours for the asking. I was going to use it on my Ari acquired Motolights (illegal in Finland) but decided if I wanted them off I'd just pull the fuse. Let me look in my parts box and if you want to review the installation instructions and want the module, PM me.
Attached Files
File Type: pdf Autoswitch Instructions.pdf (215.3 KB, 378 views)

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post #3 of 8 Old Sep 9th, 2014, 5:51 am
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Re: Aux LED Light Wiring Help

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Originally Posted by copperstatetour View Post

1. I want them to come on with ignition but be able to turn them off with a switch if I don’t want that (easy enough)
2. I would like to be able to switch them on when the bike is off, fork locked and key out of the ignition.
Thanks in advance.
You can't have it both ways, unless you have 2 separate light switches controlling the lights.Option 1 is switched power,option 2 is non switched power. One way to achieve this is with a fuse block.
http://www.twistedthrottle.com/power...or-motorcycles
But I would go with switched power through a fuse block.

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post #4 of 8 Old Sep 9th, 2014, 7:24 am
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Re: Aux LED Light Wiring Help

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You can't have it both ways, unless you have 2 separate light switches controlling the lights.Option 1 is switched power,option 2 is non switched power. One way to achieve this is with a fuse block.
http://www.twistedthrottle.com/power...or-motorcycles
But I would go with switched power through a fuse block.
You could consolidate by using a single, double throw double pole, center off toggle or rocker switch.

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post #5 of 8 Old Sep 9th, 2014, 12:18 pm Thread Starter
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Re: Aux LED Light Wiring Help

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You could consolidate by using a single, double throw double pole, center off toggle or rocker switch.
That's what I was thinking of, but wasn't sure if it would work, I am not opposed to having 2 switches but I wasn't really sure how to wire that up. The ultimate option is to double the lights and have one switched on ignition and the other set switched on direct but that's added cost I would rather avoid. I was looking at DPDT switches like this even though the indicator lights wouldn't work.

I just don't know if this can be done without completing a circiut between all other ignition controlled circuits when I flip the lights on off battery power.

-Steve

2000 BMW K1200LT
2000 BMW R1200C
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post #6 of 8 Old Sep 10th, 2014, 8:32 am
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Re: Aux LED Light Wiring Help

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Originally Posted by copperstatetour View Post
That's what I was thinking of, but wasn't sure if it would work, I am not opposed to having 2 switches but I wasn't really sure how to wire that up. The ultimate option is to double the lights and have one switched on ignition and the other set switched on direct but that's added cost I would rather avoid. I was looking at DPDT switches like this even though the indicator lights wouldn't work.

I just don't know if this can be done without completing a circiut between all other ignition controlled circuits when I flip the lights on off battery power.
I could be wrong, it's happened before. But, I believe if you get a DPDT, center off switch and bring direct battery power into one side and switched power into the other side then connect you light to the center tap it should work.

Lynn Keen
North East Florida
MSF #28271 Retired
'99 Canyon Red RETIRED AT 93,000 MI
'05 GRAPHITE METALLIC retired at 87,000 MI
'01 R1150 GS- totaled
'02 R1150 GS sold
'85 K100/EML sidecar sold
'11 R1200RT currently being enjoyed

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post #7 of 8 Old Sep 10th, 2014, 9:41 am Thread Starter
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Re: Aux LED Light Wiring Help

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Originally Posted by Lynn_Keen View Post
I could be wrong, it's happened before. But, I believe if you get a DPDT, center off switch and bring direct battery power into one side and switched power into the other side then connect you light to the center tap it should work.
That's what my simpleton brain was telling me, but as I have confessed, electrical is not my strong suit by any means so I wanted some confirmation. I'm going to give it a whirl with the DPDT and see if it works, if not then I can always go to plan B or C.

Thanks everyone for the input, I should have it all done in the next month or so, my goal is to be back on the road in time for the AZBeemers Annual Fall Gathering 10/25 and the start of the riding season - holding fingers crossed.

-Steve

2000 BMW K1200LT
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post #8 of 8 Old Sep 10th, 2014, 12:12 pm
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Re: Aux LED Light Wiring Help

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Originally Posted by copperstatetour View Post
That's what my simpleton brain was telling me, but as I have confessed, electrical is not my strong suit by any means so I wanted some confirmation. I'm going to give it a whirl with the DPDT and see if it works, if not then I can always go to plan B or C.

Thanks everyone for the input, I should have it all done in the next month or so, my goal is to be back on the road in time for the AZBeemers Annual Fall Gathering 10/25 and the start of the riding season - holding fingers crossed.
If you want the ability to select constant power or switched power or neither, just make sure the switch that you use has a center off position.

Lynn Keen
North East Florida
MSF #28271 Retired
'99 Canyon Red RETIRED AT 93,000 MI
'05 GRAPHITE METALLIC retired at 87,000 MI
'01 R1150 GS- totaled
'02 R1150 GS sold
'85 K100/EML sidecar sold
'11 R1200RT currently being enjoyed

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