Voltage Gauge for Stock Cluster | 66-77 Bronco, 61-66 Ford Truck SKU: 6026

Voltage Gauge for Stock Cluster | 66-77 Bronco, 61-66 Ford Truck

Replaces factory Alternator Gauge

Product Overview:

This Voltage Gauge for Stock Cluster is the smart, clean upgrade for your 1966–77 Ford Bronco or 1961–66 Ford Truck. Designed to fit right into the factory gauge cluster in place of the original ALT gauge, it gives you real-time, accurate voltage readings with no modifications. This gauge delivers a safer, more reliable way to monitor your charging system while keeping the original look of your dash intact. Whether you're restoring or upgrading, this is one of the best electrical improvements you can make.

Full description

Voltage Gauge for Stock Cluster | 66–77 Bronco, 61–66 Ford Truck

Upgrade the stock dash on your 1966–77 Ford Bronco or 1961–66 Ford Truck with this OE-look Voltage Gauge, designed to fit directly into the stock instrument cluster by replacing the original ALT gauge. This upgrade gives you accurate, real-time voltage monitoring - something the factory gauge simply couldn’t do. It fits perfectly into the stock gauge housing with no modifications, giving you a clean, factory appearance with modern function.

Direct Replacement — Fits into the stock cluster, replacing the original ALT gauge without any modifications
Accurate Electrical Monitoring — Displays real-time voltage for a clearer, safer readout of your charging system health
Easy Install — Simple wiring - just connect to switched ignition power and ground
OE Look, Modern Function — Matches the style of the original cluster while providing updated accuracy
Gauge Style Clusters Only — This gauge is not compatible with Ford truck clusters that used warning light indicators

Fitment:

1966–77 Ford Bronco
1961–66 Ford F100, F250, F350 trucks with gauge-style clusters

Note: Will not work with clusters that use light indicator gauges. For gauge-style clusters only.

Why This Voltage Gauge Is a Must-Have Upgrade

The factory ALT gauge (ammeter) in these classic Broncos and Ford trucks isn’t just outdated - it’s a known weak point. That ammeter sends the full charging system amperage directly through the dash, meaning every amp your alternator pushes runs through thin wires and fragile connections behind the cluster. Over time, this leads to inaccurate readings, fried wires, melted terminals, or worse - an electrical fire.

A voltage gauge does the job smarter and safer. It reads system voltage with just a simple ignition signal and a ground - no high-current load passing through the dash. You get an instant read on your charging system’s health. Low voltage? You’ll know before you get stranded. Overcharging? You’ll catch it before you cook your battery. It’s a safer, smarter upgrade that looks factory but functions like a modern gauge.

Ditch the outdated ammeter - our voltage gauge fits your stock cluster for accurate, safe monitoring of your 66-77 Bronco or 61-66 Ford truck electrical system.