I have a 1987 Caballero and my instruments we're very dim at night so I opened it up and found two bulbs were out I replaced them with what I was told were brighter bulbs I now have very little improvements during the day my amp gauge runs at about 12 o'clock at night with the headlights on and the radio on it goes down to about 10 o'clock. I figure this is about normal however the instruments are still not as bright as they should be. I'm thinking this is probably either a dimmer switch issue or a charging issue but I don't think it's a charging issue because I have no problems with battery draining or anything like that any thoughts?