Using the Rear Seat wiring for switched relay in Fuzeblocks - BMW Luxury Touring Community
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post #1 of 14 Old Nov 17th, 2018, 8:53 pm Thread Starter
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Using the Rear Seat wiring for switched relay in Fuzeblocks

Hi, while I have it stripped down I am doing some other things, one of which is a Fuzeblocks. I saw in several posts about using the rear seat wiring "green wire" as the trigger but the question is which green wire? Looking at the area with the rear seat off I see the power plug on the left of the pic and there is a green/black wire. On the right there are some wires on one of the barrel connectors and one is green but so far I have not read or seen something that zeros in on "the green wire". Or...is it somewhere else completely?

I should add I don't have the battery in and don't want to try to energize it so hoping for a visual instead of a voltage check.
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Oklahoma City, OK. 2003 K1200 LT. "Remember men, if the women don't find ya handsome, at least let 'em find ya handy." Red Green

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post #2 of 14 Old Nov 17th, 2018, 10:26 pm
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

I used the wire with green on the white heated seat power connector not the barrel connector.
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post #3 of 14 Old Nov 18th, 2018, 12:09 am Thread Starter
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

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Originally Posted by bmwcoolk1200 View Post
I used the wire with green on the white heated seat power connector not the barrel connector.
Thanks! Since I don't carry a passenger I think I will just use a square connector and push onto the male part of that wire and leave it unplugged...once I confirm it works, lol.

Oklahoma City, OK. 2003 K1200 LT. "Remember men, if the women don't find ya handsome, at least let 'em find ya handy." Red Green
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post #4 of 14 Old Nov 19th, 2018, 12:51 pm
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

If you use one of these Posi-Tap connectors,https://www.posi-products.com/posiplug.html , things will go quite easily. I have used the wire for the parking light in the headlight assembly as my trigger power. Has worked well on both LT's I have owned.
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post #5 of 14 Old Nov 20th, 2018, 5:15 pm
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

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Originally Posted by Munmi View Post
If you use one of these Posi-Tap connectors,https://www.posi-products.com/posiplug.html , things will go quite easily. I have used the wire for the parking light in the headlight assembly as my trigger power. Has worked well on both LT's I have owned.
Just dont let them get wet or get any road or sea salt on them. They are far inferior to a proper splice that is soldered, coated with dielectric grease and then sealed with appropriately sized shrink tubing.
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post #6 of 14 Old Nov 20th, 2018, 6:49 pm Thread Starter
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

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Just don’t let them get wet or get any road or sea salt on them. They are far inferior to a proper splice that is soldered, coated with dielectric grease and then sealed with appropriately sized shrink tubing.
I had actually intended to just get one of the female prong connectors and plug it into the fixed male connector and solder to the green wire coming off the female plug...no? I ride alone so no need for it to be plugged into the rear seat.

OR...get one of those Deutsch connectors and crimp/solder to it and just push onto the green wire male connector...
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post #7 of 14 Old Nov 20th, 2018, 8:15 pm
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

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I had actually intended to just get one of the female prong connectors and plug it into the fixed male connector and solder to the green wire coming off the female plug...no? I ride alone so no need for it to be plugged into the rear seat.

OR...get one of those Deutsch connectors and crimp/solder to it and just push onto the green wire male connector...
Getting a connector the same as on the seat and then using that to plug into the bike connector would be the ideal way as long as you dont need the seat heater.
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post #8 of 14 Old Nov 24th, 2018, 1:52 am
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

Hi. I did this a number of years ago so I thought I throw this in. I installed a small fused relay under the rear seat to provide switched power to the fuzeblock. I got switched power by cutting into the loom near the large plug at the rear of the seat and finding a wire that was live when the bike was turned on. I can't remember exactly which one; I think it's power to the top box light but it was a long time ago.
Soldered, shrink-wrapped and re-taped the loom.
The relay is designed to slide on to a mount that came with the relay. I've just pushed it onto a mount that is already on the bike next to the plug for the seat heater. It doesn't fit properly but hasn't moved for at least six years now.
I'll try and post a couple of pictures on this thing
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post #9 of 14 Old Nov 24th, 2018, 6:41 am
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

Quote:
Originally Posted by reikin View Post
Hi. I did this a number of years ago so I thought I throw this in. I installed a small fused relay under the rear seat to provide switched power to the fuzeblock. I got switched power by cutting into the loom near the large plug at the rear of the seat and finding a wire that was live when the bike was turned on. I can't remember exactly which one; I think it's power to the top box light but it was a long time ago.
Soldered, shrink-wrapped and re-taped the loom.
The relay is designed to slide on to a mount that came with the relay. I've just pushed it onto a mount that is already on the bike next to the plug for the seat heater. It doesn't fit properly but hasn't moved for at least six years now.
I'll try and post a couple of pictures on this thing
The Fuzeblock does not need a relay on the switched signal. It has been a decade since I installed mine, but I am pretty sure it uses that only as a control signal. It takes all power for both its switched and unstitched outputs directly from the battery, not through the signal line.
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post #10 of 14 Old Nov 24th, 2018, 11:35 am Thread Starter
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

Quote:
Originally Posted by reikin View Post
Hi. I did this a number of years ago so I thought I throw this in. I installed a small fused relay under the rear seat to provide switched power to the fuzeblock. I got switched power by cutting into the loom near the large plug at the rear of the seat and finding a wire that was live when the bike was turned on. I can't remember exactly which one; I think it's power to the top box light but it was a long time ago.
Soldered, shrink-wrapped and re-taped the loom.
The relay is designed to slide on to a mount that came with the relay. I've just pushed it onto a mount that is already on the bike next to the plug for the seat heater. It doesn't fit properly but hasn't moved for at least six years now.
I'll try and post a couple of pictures on this thing
Thanks! If I hadn't found the green wire on the rear seat plug I was going to dig into one of the barrel harnesses. I looked at the your location but decided I wanted a bit more protection from dirt and moisture. It made the fuzeblock a little taller but I put a thin wooden cover over the pcb and then added some of the heavy 3M velcro and will have it stuck to the open area by the left saddlebag. The black piece that comes from the rear cover will pull up enough to find a good spot and I have my wires coming around the front and back so I can see the color tags for the wires running to the front. For the back two wires I cut them into short pigtails and will add wire as I think of power needs such as led running lights. Actually I found a little 12v led hub that will dispense power to several led sticks and I can feed it with just one of the FZ-1 fuzes.

Oklahoma City, OK. 2003 K1200 LT. "Remember men, if the women don't find ya handsome, at least let 'em find ya handy." Red Green
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post #11 of 14 Old Nov 24th, 2018, 7:57 pm
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

Ran a wire from the switched rear powerlet plug for mine to trigger the switched power on the Fuzeblock. Easy enough to get to.
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post #12 of 14 Old Nov 27th, 2018, 1:16 am
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

I think the posi-tap connectors are great and you can put a little dielectric grease i both ends before assembling. Keeps out dirt, water, and corrosion.

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post #13 of 14 Old Nov 28th, 2018, 4:32 am
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

Quote:
Originally Posted by Voyager View Post
The Fuzeblock does not need a relay on the switched signal. It has been a decade since I installed mine, but I am pretty sure it uses that only as a control signal. It takes all power for both its switched and unstitched outputs directly from the battery, not through the signal line.
Yes. More force of habit and it gave me a neat fused circuit close to the rest of the fuses. I'm not a fan of having inline fuses; I tend to forget where I put them.

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post #14 of 14 Old Nov 28th, 2018, 6:44 am
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Re: Using the Rear Seat wiring for switched relay in Fuzeblocks

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Yes. More force of habit and it gave me a neat fused circuit close to the rest of the fuses. I'm not a fan of having inline fuses; I tend to forget where I put them.
The Fuzeblock has a relay and fuses built in so you are simply adding a relay to control a relay and a fuse to protect fuses. No harm in that, but completely unnecessary and more parts to fail.

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1976 Kawasaki KH400
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