krewzlo
+1y
onboardair.com has a bunch of info.
You can wire one up to run 24v, and still run your truck off the first battery. You would hook battery 1 ground to ground on truck, bat 1 pos to truck positive cable and also another cable running from bat 1 pos to bat 2 neg. and then bat 2 pos to pos on oasis. You would need to isolate the truck battery positive cable though to prevent any back feed or current issues. You could use a battery isolation kit that is used when adding a second battery to your charging system.
Confused? I am now that I reread it. Haha