I just bought a 1966 bronco 170 cid

. and right now its being a moody on the gauges. First of all the gauge light will stay on for about 5 minutes and then it will cut off and sometimes when i hit it slightly it will cut on so i don't know if i need new wiring for it or what (not exactly and expert on wiring). Also my fuel gauge is just messed up or something because for some reason it will say i need gas when i don't like yesterday i was 1/4 a tank full i went to get gas due to my bronco is a gasaholic like any bronco and it was basically full. And finally PARTS.... i cant seem to find any parts at all for a 170 cid engine at all and i want to fully restore my engine but i can't find parts for it so sites or just someone who wants to sell me some parts would be great.