Mine is on my website, but I just updated it to include the BMS and a few other odds n ends.
PDF is available here.
Here would be my ignition circuit for switching a Vicor DC/DC converter and a MiniBMS charger output.
Edit: Should have completely tested this before posting. It's not ready yet so I've removed the link.
Last edited by DaveAK; 28 February 2011 at 2232.
Nice Job Noah. I've been trying to figure out a way to get the start switch to work the contactor as well. I may steal some of your ideas.
As for my wiring diagrams, I wrote up on my blog a post on the various wiring diagrams that i've been evolving for a while. The posts are located at http://electriceptor.wordpress.com/2...ring-diagrams/ and a second post at http://electriceptor.wordpress.com/2...ring-diagrams/. I've used these diagrams as a way to ensure that I understand where everything is going to go, and whenever i change how i think i'm gonna do it, i change the diagram. I'm pretty paranoid about setting fire to the garage, blowing things up, etc.
Here's my laatest diagram. I'd love to hear any suggestions.
Also, the "Armed LED" isn't necessary for the circuit to work - I just have that because I like a visual indicator that the contactor is closed.
Noah, also, where'd you get the latching relay? Got a maker and model number handy?
And even more questions...From your diagram, your key switch can handle 80V? Really? Did you use the original key switch or something else?
I noticed on your diagram that the DC-DC converter isn't isolated. I decided to use an isolated converter because on my scooter I've got bits of the 12V circuit grounded to the frame. I'm not 100% sure that this is a problem but you might want to double check. Unless you're not using the frame to ground things.