They didn't earn the name "idiot lights" for nothing .................... Sorry, couldn't resist that one On a 65? if it's on constantly, I'd tend to lean toward it being either the brake warning or alternator not charging.
humm i have a 66 with original instrument panel, and mine doesnt have warning lights to my knowledge..is yours like a special option or something, or was it just for 65?? just curious
Usually these lights warn you that your bank account is about to take a big hit. Too frequently by the time these lights come on you already have a problem. Aftermarket gauges are much more meaningful indicators of engine status.