So I'm installing a permanent battery tender (this one). I've got it mounted in the engine bay. The instructions call for the positive O-ring/lead to connect directly to the positive terminal of the battery, and the negative to connect to a body ground point or the engine block. However, I can't find a suitable point anywhere within reach of the negative cable. Would it be terrible if I just connected it to the negative battery terminal bolt? It's all the same "Node" in the circuit, isn't it? car is a 2008 acura RL, and the tender is mounted to the right of the battery as you face the car. Thanks!