Welcome!
How 'bout some pics?
On the fuel gauge, it is frequently the sending unit. But see the Troubleshooting tab here to determine that: Electrical/
Gauges.
As for the turn signals, do neither work? Do they come on but don't flash? Or not come on?
Gold emblems were not offered by Ford, so it might have been done at the dealership or, more likely, a previous owner.
And a pic will help a lot on the paint scheme.
Gary, AKA "Gary fellow":
Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI