Here an after thought when I was mounting the battery.. We are arunning a 17 lbs Braille Battery tucked underneth the dash.. So I had to figure a way to jump start the car or put a trickle charger.. We machined a brass bung to mount to the side of the block for ground that was close to our power source in the engine bay.. I am sure we could have done something better.. but weight is a big factor on this car.. didn't want to run cable all over the place..