More Electrical Help ...

Hello again guys. I got my 62 Valiant running but now the gauges are pegged - fuel - pegged low and water temp pegged high - ammeter seems OK... No panel lights - once in awhile I get a backlight to go on (new switch installed) wipers work... Thought the instrument cluster voltage limiter might be the culprit...any ideas? Tired of laying on my back in 90 degree heat and trying to fit my meat hooks inside the dash:mad: I'd like to fix this once and for all. Any thoughts / help is much appreciated.
Cheers,
Jason