u/GunxZero

I have a 74 C20, last fall I installed a Sniper 2 EFI, Hyper spark, power distribution module, and replaced the old fuel tanks with a single EFI ready tank since my old ones were leaking. Before the work was done, all my instrument gauges worked correctly, but after the swap my horn, fuel gauge, and coolant temp sensor no longer work. Temp sensor reads way above high, fuel gauge stays at empty and goes above full of if I hit the fuel selection switch. Anyone have thoughts where to check for potential issue that might be impacting all three? The rest of my electrical works fine, truck runs great otherwise