1 Instruments wiring advice Sat Feb 04, 2017 9:33 am
FreyZI
Silver member
Greetings, all.
1985 K100RT renovation/salvation project. This was a neglected bike needing more than just TLC. It's coming back together reasonably well after powder coat, some new parts, and many hours of cleaning. As I've opted for a naked K, I've swapped out handlebar for clip-ons and I'm in the process of wiring the new speedo unit. I went ahead and purchased an Acewell-6653, as I received no replies on my request for recommendations on aftermarket gauges that worked well out of the box (maybe those don't exist). I've done some wiring to my house and it hasn't burned down, yet, but I'm a wiring novice. So, here's were I'm at:
I've spliced the new harness onto the old one -- where they should work without modification. Thus, left and right turn indicators, high beam, overheat warning light, neutral indicator, oil pressure, clock/power, and ignition/switch key are all connected (tentatively -- I haven't shrunk the shrink tube, yet).
A couple questions at this point. I have many wires left over from the original harness. My assumption is that I don't necessarily have to do anything with them and I could either wrap the pin connectors up pretty and tuck them in somewhere; or I could snip the old connectors off and preserve for somebody else. I'd also have some OEM switches and sensors and their associated wires hanging out with no real purpose Should I get rid of those and plug up holes as necessary and pull wires, or leave them be? Is there anything that I would have to deal with so that necessary units function properly?
Examples:
Pins 2, 3, and 4 on the stock connector. The Acewell gets trained to recognize what gear the bike is in by calculating from speed and RPM and will not connect to the "switch gear indicator" wires to the gear position sensor. Thus, the gear position sensor is obviated. Leave it alone?
Pins 12, 21, and 24: Choke lamp, turn signal canceller, and "speedometer illumination", respectively. These all go to the flasher unit. Will the fact that these wires from the flasher unit go to dead ends cause any problem for the rest of the functions? Pull the unused choke switch?
Pins 22 and 23: "tach pulse encoder". The speedo impulse transmitter will be replaced by a reed switch, for which I've made a custom mount attached at the left fork tube pinch bolts. I'm tempted to leave the old one in place (though I've seen a post where the author didn't like to leave that type of thing and inquired about how to plug the hole). Incidentally, I have looked to see if there is an Acewell cable that will work with the K100. It's not obvious that such a cable is manufactured. Acewell makes cables for newer bikes and older Rs, but apparently not for me.
Pin 16: "speed signal from ignition coil". I've got two options here on the new unit: I can either wrap a few loops of wire around the plug wire or connect a different wire "to either the ECU rev counter output or to the primary side of the coil or to the pulse wire on an active spark plug cap." Any preference?
I've got a temp sensor on the new unit, too, and will consider using it eventually, but for now it's going to wait.
Any advice will be greatly appreciated!
Cheers,
Frey
1985 K100RT renovation/salvation project. This was a neglected bike needing more than just TLC. It's coming back together reasonably well after powder coat, some new parts, and many hours of cleaning. As I've opted for a naked K, I've swapped out handlebar for clip-ons and I'm in the process of wiring the new speedo unit. I went ahead and purchased an Acewell-6653, as I received no replies on my request for recommendations on aftermarket gauges that worked well out of the box (maybe those don't exist). I've done some wiring to my house and it hasn't burned down, yet, but I'm a wiring novice. So, here's were I'm at:
I've spliced the new harness onto the old one -- where they should work without modification. Thus, left and right turn indicators, high beam, overheat warning light, neutral indicator, oil pressure, clock/power, and ignition/switch key are all connected (tentatively -- I haven't shrunk the shrink tube, yet).
A couple questions at this point. I have many wires left over from the original harness. My assumption is that I don't necessarily have to do anything with them and I could either wrap the pin connectors up pretty and tuck them in somewhere; or I could snip the old connectors off and preserve for somebody else. I'd also have some OEM switches and sensors and their associated wires hanging out with no real purpose Should I get rid of those and plug up holes as necessary and pull wires, or leave them be? Is there anything that I would have to deal with so that necessary units function properly?
Examples:
Pins 2, 3, and 4 on the stock connector. The Acewell gets trained to recognize what gear the bike is in by calculating from speed and RPM and will not connect to the "switch gear indicator" wires to the gear position sensor. Thus, the gear position sensor is obviated. Leave it alone?
Pins 12, 21, and 24: Choke lamp, turn signal canceller, and "speedometer illumination", respectively. These all go to the flasher unit. Will the fact that these wires from the flasher unit go to dead ends cause any problem for the rest of the functions? Pull the unused choke switch?
Pins 22 and 23: "tach pulse encoder". The speedo impulse transmitter will be replaced by a reed switch, for which I've made a custom mount attached at the left fork tube pinch bolts. I'm tempted to leave the old one in place (though I've seen a post where the author didn't like to leave that type of thing and inquired about how to plug the hole). Incidentally, I have looked to see if there is an Acewell cable that will work with the K100. It's not obvious that such a cable is manufactured. Acewell makes cables for newer bikes and older Rs, but apparently not for me.
Pin 16: "speed signal from ignition coil". I've got two options here on the new unit: I can either wrap a few loops of wire around the plug wire or connect a different wire "to either the ECU rev counter output or to the primary side of the coil or to the pulse wire on an active spark plug cap." Any preference?
I've got a temp sensor on the new unit, too, and will consider using it eventually, but for now it's going to wait.
Any advice will be greatly appreciated!
Cheers,
Frey