I had an optima for a while, Had it in my 85 supra. I was having some really strange electrical bugs here and there, voltage spikes, drops, batt draining etc.... turned out to be a bad spiral cell in the battery. I love optimas but this one was a hand me down with an unknown past
![My Two Cents :twocents:](https://board.marlincrawler.com/Smileys/marlin/twocents.gif)
try swapping in another battery jus tto rule it out.