I have a 1984 Rinker with an 3.0 OMC Stringer out drive. Purchased boat from someone who had partially restored the boat, mainly the cosmetics (upholstery, etc...) He said he had replaced the plugs and wires but I am not sure of the type or quality at time of writing this. I Bought and installed a new DieHard marine battery (when I bought boat the battery was dead). Everything works as far as accessories and the boat will crank and start/run with the outdrive in the lower position. The problem is this: If the out drive is in the up position, I turn the key to "on" to allow the raise/lower switch to work, and then I lower the out drive all the way which instantly drains a fully charged battery. I can then quick charge the battery with the drive in the lower position and everything fires back up. Brought battery back to Sears, bench tests fine. So to recap, when I lower the out drive it instantly drains a fully charged Marine starting battery but a quick charge brings it back up and the boat and it's functions work fine. This motor also has the tilt/trim option on the motor itself. I can send pictures and provide additional details. What would cause this issue? And yes I know electrical issues can be difficult to trace but any thoughts would be great.