Update: now have a fully working light system

[okie]

Thank you for allowing me to pester ya'll mercilessly with questions these last few weeks!

Here are the fruits of your patience so far! This is my harness for my now fully working light system. I have a brake light wired into my 12v brake cutoff, turn signals, a display, horn, etc.

If anybody else is doing or wants to do this and you need help feel free to @ me or message me.

One thing I did that's kind of maybe unconventional or even a complete oneoff idk is I have two 12v lines coming from my power converter. One runs through that blue switch and powers the running lights. The other powers the brake light, turn signals, and horn. The idea is that the running lights can be turned off if necessary to conserve battery, without losing the ability to use the horn, brake light, and turn signals. I think that might be especially relevant for people running really big, elaborate lights all over the bike. Some of those running/accent lighting systems can pull some pretty big current, and that would be no bueno if you were coasting home on millivolts. Especially with these stealth clones that either don't have pedals or have vestigial pedals.

 

[E-HP]

You’ve been busy! Looks well organized. If you haven’t wired the display yet, it will be easy now with the harness.
Did you start with a lighting kit, or just buy parts ala carte ?

 

[okie]

You’ve been busy! Looks well organized. If you haven’t wired the display yet, it will be easy now with the harness.
Did you start with a lighting kit, or just buy parts ala carte ?

Just rando amazon parts. Yes sir, that harness does include the display. My controller doesn't have a display dongle, so not all display features are available to me, but I do have the indicator light LEDs. The speed mode LEDs don't seem to have any reasonable solution to make them work. I can make the LEDs light up, but making them show which speed mode it's in will require something pretty elaborate. Making NML and SPT would be relatively easy but making MID light up would be complicated. I think ultimately it would require some kind of board and someone with actual programming skills. I think I'll be able to just live without them lol. Some of the LEDs are also not needed in my jurisdiction, like the position light, we don't have those here. I'm thinking about repurposing some of that for maybe hazard lights or something.

 

[E-HP]

I can make the LEDs light up, but making them show which speed mode it's in will require something pretty elaborate. Making NML and SPT would be relatively easy but making MID light up would be complicated.

What are you using for you 3 speed switch now? (Couldn’t see it in the pics). If you replace the single pole with a double pole version, then you can use the second pole to send 12v to the high and low speeds, which is probably simplest.

 

[okie]

What are you using for you 3 speed switch now? (Couldn’t see it in the pics). If you replace the single pole with a double pole version, then you can use the second pole to send 12v to the high and low speeds, which is probably simplest.

I'm just using the cheap generic 3 speed handlebar switches off amazon.

The thing I'm not able to wrap my mind around is how I would make NML light up because in normal mode there's no connection being made. So like in high speed, the 5v wire is connected to the ground, in low it's the 0v wire connected to ground, and no wire connected to ground means normal. As far as I can tell, the ground on the 3 speed dongle is just a neutral wire.

 

[Elmo]

hey there, nice work on the light system! i'm thinking about doing something similar for my ebike. how difficult was it to wire everything up? i'm a bit nervous about messing with the electrics.

 

[E-HP]

I'm just using the cheap generic 3 speed handlebar switches off amazon.

The thing I'm not able to wrap my mind around is how I would make NML light up because in normal mode there's no connection being made. So like in high speed, the 5v wire is connected to the ground, in low it's the 0v wire connected to ground, and no wire connected to ground means normal. As far as I can tell, the ground on the 3 speed dongle is just a neutral wire.

8 pin, 3 position, double pole slide switch would work. Switched ground on one pole, switched 12v on the other pole.

G-1128S-0055 | DigiKey Electronics

Order today, ships today. G-1128S-0055 – Slide Switch DP3T Panel Mount from CW Industries. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

 

[okie]

hey there, nice work on the light system! i'm thinking about doing something similar for my ebike. how difficult was it to wire everything up? i'm a bit nervous about messing with the electrics.

Not gonna lie, it was a bit of a struggle. I have no background in this kind of thing and it's kind of a worst case scenario because of all the random Chinese components with no standards and dodgy wiring diagrams even from the manufacturer of any given part.

That said, I now have the keys to the kingdom and could do it pretty easily again. All bike lighting systems are pretty similar, too, so I'm sure I could help you regardless.

 

[okie]

8 pin, 3 position, double pole slide switch would work. Switched ground on one pole, switched 12v on the other pole.

G-1128S-0055 | DigiKey Electronics

Order today, ships today. G-1128S-0055 – Slide Switch DP3T Panel Mount from CW Industries. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

I'm too mentally exhausted to dig into that right now, but once I recover from this I might circle back around and try it again. Thank you for the infos!

 

[E-HP]

I'm too mentally exhausted to dig into that right now, but once I recover from this I might circle back around and try it again. Thank you for the infos!

Celebrate your accomplishment!! It's impressive work.

 

[okie]

Celebrate your accomplishment!! It's impressive work.

Yep, once I get my ebrake throttle working I'm going to put my tools away for a while. Just have that to get sorted, and of course do a little cable management to hide the spaghetti monster of wire I just made lol.

 

[okie]

Celebrate your accomplishment!! It's impressive work.

Need help setting up e-brake on svmc 72150

I'm trying to set up my freshly installed ebrake throttle, and I'm assuming that my controller is set up for a switch? And further assuming I will have to use the actual software via programming cable to change that to the throttle? Assuming those assumptions are indeed correct, are there any...

endless-sphere.com

In case you might happen to know