Can anyone recommend a good place from the engine bay for me to route a wire through the firewall? I've looked everyone in the engine bay and can't find a good spot. I thought about cutting a small slit through the current tube that's routing the all the wires into the car. It seems quite tight and might not be the best option.

Thanks in advance for your help!

 

Best leave well enough alone since you might mess up your whole electrical system. Just my two cents.