Dash Indicator Lights

Frequently Asked Questions

Choose a standalone indicator when you already have a compatible circuit or sender and only need a visible dash light. Choose a complete warning-light kit when you are adding a new pressure or temperature warning from scratch. Longacre Gagelites kits include the sender, light, wire, and terminals, while a Painless 80211 is only the 12-volt indicator lamp. Match the product to what is already installed before ordering.

Start with the condition you want to monitor and the point at which you want the warning to appear. Current {{website}} Gagelites include separate kits for 270°F oil temperature, 230°F water temperature, and low water pressure. The sender or switch determines when the light activates; the lamp color does not. Match the trigger to the engine or system requirements rather than choosing a kit by appearance alone.

Not automatically. Match the sender thread to the port where it will be installed. Current warning-light kits on {{website}} use different fittings, including 1/8-inch NPT for water pressure and 3/8- or 1/2-inch NPT for temperature applications. If your engine or cooling system uses a metric or BSP thread, use the correct adapter rather than forcing a similar-looking fitting. Confirm both thread type and sensing location before buying.

It depends on the light. Painless lists its 80211 blue dash indicator for a 1/2-inch mounting hole, while Longacre Gagelites use a 3/4-inch warning-light assembly. Other indicator controls can use rectangular panel cutouts instead of a round hole. Measure the opening you already have—or confirm the required cutout before drilling a new one—and make sure there is room behind the panel for the terminals and wiring.

Sometimes. {{website}} carries Longacre replacement light assemblies separately from complete warning-light kits, so a failed or damaged lamp does not always require replacing the sender. The replacement still has to match the warning system's voltage, mounting size, and wiring. Replacing the light also does not change the warning threshold—the sender or switch controls that. If the sender or wiring is the problem, a light-only replacement will not fix it.