Mystery smoke from gauge cluster

I just bypassed the ammeter, I stacked wiring running in an out to one terminal. I'm also running a one wire alternator directly to the battery, so there alternator is no longer hooked up to the ammeter. The smoke is really really faint and I can smell it but I can tell where it's coming from, so far I'm wondering if it's because it's ungrounded, the dash cluster is out right now, but I'm not sure if it would cause something to smoke