MOTOBRICK.COM
TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: duddini on August 17, 2017, 10:56:38 PM
-
Hi all,
I've just bought a 1985 K100RS from a co-worker who had used it daily until a few months ago. I'm having electrical issues, but I'm reading up on possible causes and I think I have a starting point, BUT, I have not found the function of a connector that is just hanging out not connected. The previous owner told me it was never connected to anything and the bike ran fine, but it bugs me. I've attached two pictures, it ends next to the coil cover (that has been removed), it looks like a white with red stripe, and a brown wire going into a connector.
I'm really looking forward to getting the bike running, and I hope to take advantage of the vast experience I've seen here.
Thanks for any help,
Bob
-
greetings...
that powers up accessory socket known as hella or powerlet generally used for battery tender or heated clothes...
j o
-
Thanks Johnny, would you mind giving me a bit for info, for my education ??
What type of accessories ??
Thanks again, I'm going to love it here :2thumbup:
Bob
-
greetings...
12 volt accessories...
j o
-
I think you will find it is a switched 12v supply active when the ignition switch is in the on position. It is intended for the accessory power socket usually mounted on the coil cover. The BMW socket is also known as a "merit" plug which looks a little like a cigarette lighter socket but smaller diameter.
This switched supply shares fuse #1 (7.5 amp) with the brake light. It is useful for running auxiliary lighting etc.
I use this supply for my daytime running lights but have wired my accessory socket directly to the battery (via an inline fuse) so that it can be used as a connection for a battery charger in addition to running a tyre pump or phone charger.
-
What type of accessories ??
12 volt accessories...
NutriBullet, electric pneumatic jackhammer, Hammond B-3, Magic Fingers, FloBee, heated clothing, trickle charger, GPS—although use of some of these items will need an inverter and might cause your bike or the item to catch fire. It's all part of the journey. :giggles
-
My '92 has two, count 'em, two 12V accessory sockets mounted outside the coils. They connect with those wires.
-
On my bikes those outlets are wired directly to the battery and are live at all times.
-
greetings...
rick wakeman pluggs hammond b3 into hella socket...

Screenshot_20170818-081303.jpg (31.41 kB . 324x576 - viewed 752 times)
j o
-
On my bikes those outlets are wired directly to the battery and are live at all times.
AS are mine...
-
greetings...
rick wakeman pluggs hammond b3 into hella socket...
wow, there is a blast from the past!!!!
-
greetings...
rick wakeman pluggs hammond b3 into hella socket...
j o
I truly wish the B3 players I played with had those handles on their friggin' beasts. Modern keyboards hump easier, but just don't have that sound.
Digging that old Fender tube head... The sound of my highly misspent youth.
-
Modern keyboards hump easier, but just don't have that
Sounds like you must have gotten pretty lonely and desperate on the road as a musician, Gryph. :giggles
-
Not THAT hump,Laitch. :nono
The hump I refer to is an army term I picked up a long time ago. Refers to moving heavy shit around. Fits perfect with load-in/out activities at gigs, especially regarding large pieces of furniture and stairs. There was a time when every serious band had one of those monsters.
-
In OZ Wednesday is colloquially referred to as Hump Day. Once you get past Wednesday it is a down hill run to the weekend.
Regards Martin.
-
In OZ Wednesday is colloquially referred to as Hump Day.
It's referred to that here in the chee as well...
https://www.youtube.com/watch?v=RlFg-a1AJCU (https://www.youtube.com/watch?v=RlFg-a1AJCU)
-
Bruce Katz has his B3 built into a road case. Still a heavy beast, but easier to handle.
Keith Emerson ran his Leslies with Hiwatt heads.
-
I use this supply for my daytime running lights but have wired my accessory socket directly to the battery (via an inline fuse) so that it can be used as a connection for a battery charger in addition to running a tyre pump or phone charger.
Mine is connected to the battery with an inline fuse as well (5 amp fuse) on my 87 K75. I'm trying to use it for a tire compressor but I cant seem to get any power to it. What amp should the fuse be? What else could be the problem?
Thanks in advance!
-
Mine is connected to the battery with an inline fuse as well (5 amp fuse) on my 87 K75. I'm trying to use it for a tire compressor but I cant seem to get any power to it. What amp should the fuse be? What else could be the problem?
Thanks in advance!
The fuse is sized to protect the circuit, therefore the circuit dictates the appropriate size fuse. Wire type, size, and length as well as connectors or connection style used as well as any outlet or jack, all determine how much amperage the circuit will carry without failure or more importantly danger from overheating. This is why you commonly see the warning "Risk of Fire - Only replace with XXamp / <style> Fuse"
In other words.. Those plug in air compressors frequently blow the 10amp accessory fuse in automobiles that have a 10A outlet in the dash, now that 15A cigarette lighters have been removed. And while you can easily (although unwisely) swap the 10A fuse for a 15A or even a 20A, you cannot easily (in this case) change the wire, connectors, or other items on the same circuit. So you now run the risk of overheating those components which can lead to failure / FIRE...
Figure out what your "load"(watts) will be on the circuit, then build the circuit to handle that load with a 10 to 25% overhead. (i.e. build a 20A circuit to carry 15A) Also consider the total load you are exposing your battery and alternator to. This is why you upgrade your alternator to run extra lighting, stereos, accessories...etc.
All wire, connectors, switches, and terminals have an amperage rating just like fuses themselves, you just have to select the correct size for the task you are trying to accomplish. While temporarily running an air compressor on an under-sized circuit is probably not going to kill anyone or cause catastrophic failures, it's important to know why its not a good idea and the dynamics behind the danger.
1 amp @ 12V = 12watts
10amp @ 12V = 120 watts
20amp @ 12V = 240 watts
in your house
20amp circuit breaker @ 120V = 2400 watts