Fleet GPS & Dash Cam Installation — Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida & Mississippi Call or text: 803-513-1009  ·  info@apisignalcorp.com
Grapple and knuckle boom trucks

Grapple Truck Monitoring: See When the Grapple Is Working

A GPS tracker shows where a grapple truck went. It doesn't show when the loader was actually picking up debris. We wire the grapple truck's equipment into the tracker so you can see every stretch of work, where it happened and how long it took, across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi.

Illustration of a grapple truck with its knuckle boom loader lifting brush into a dump body
Illustration, not a customer photo: a grapple truck loading brush with its knuckle boom and grapple.

How can I tell when my grapple truck is actually picking up debris?

Out on a debris route, the truck spends a lot of time parked with the engine running: waiting on a crew, waiting at the dump site, or sitting while the operator takes a call. On a plain GPS map all of that looks the same as working. Monitoring the grapple separates the two. The platform shows the loader running as its own event, with a start time, an end time and a location on the map.

That turns a route into a clear record: which streets were picked up, how long each stop took and how much of the day the loader actually worked.

What is PTO monitoring on a grapple truck?

The knuckle boom loader and grapple run on hydraulics, and on most grapple trucks the hydraulic pump is driven by the truck's engine through a power take-off, or PTO. When the operator engages the PTO, the pump runs and the loader can work. PTO monitoring means wiring that PTO engaged signal into the tracking device, so the platform records every time the PTO is on. On a grapple truck, PTO time is loader time.

What does the owner see once the grapple is monitored?

How is grapple monitoring hooked up?

There are a few ways to give the tracking device a reliable on and off signal, and the right one depends on the truck:

On grapple trucks, fleets sometimes add a boom stowed switch as well, so the platform shows when the truck drives off with the boom out of its rest. We meter every signal before we use it, and wire colors for the truck side are in our Vehicle Wiring Database.

How do you know the monitoring is right?

We test with the loader running. The PTO is engaged and disengaged, the boom is worked, and we confirm the platform shows each event at the right time before the truck goes back out. A signal that comes from a dash switch can show the PTO requested even when it never engaged, which is why we test the result, not the wiring. For more on PTO monitoring across other trucks, see PTO and equipment integration.

Common questions

Questions We Get Asked

Can a GPS tracker show when the grapple is working?

Yes, once the PTO or a hydraulic pressure switch is wired into the tracker. The platform then shows each stretch of loader work with a time and location.

Will it work with my tracking provider?

Most fleet tracking devices have inputs for this. We check your device and platform before the install.

Can it tell me if the boom is up while driving?

Yes, with a boom stowed switch wired into the tracker alongside the PTO signal.

Do you do this outside South Carolina?

Yes. We install across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi, at your yard or shop.

Want this on your trucks?

We install across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi, at your yard, on your schedule. Call or text 803-513-1009.

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