Gen 3 Prius DRL mod: I wanted mine on all the time too—because out on the road, visibility matters more than anything.
My brother wanted to have his DRL lights on all the time, and I found a similar setup for my own build. The only difference is I tied mine to a switch so I can turn them off while #Overlanding with the car turned on.
The modification stays simple: I remove the DRL fuse and use a fuse tap to send 12v power to the specific plug port where the DRL fuse was removed. When the car is turned on, the DRL will always be on with this mod—the only way to turn it off is to remove the wire from the DRL port (that’s the part that keeps it honest and direct).
I’ll say this: if you’re the type that likes clean, repeatable wiring, this mod scratches that itch fast. If you’re building for off-road use, you also start thinking about how much “always-on” stuff you actually want running while you’re parked or camped. It’s not about adding more gadgets—it’s about controlling what matters.
If you want more DIY wiring energy for your Prius electrical updates, I’d check out upgraded the stock fog lights to cree led drl and then swing over to new isolator installed after previous one died for the “power management” mindset. Community builds get better when we share what worked (and what was annoying).
Also, if you’re shopping for the exact kind of supplies that make installs less stressful, I keep an easy path ready over at PriusOverlanding.com—grab what you need and come back stronger for your next mod.
Gen 3 Prius DRL mod wiring reality check
Here’s what I ran into (and what helped): you can’t just “hope” the DRL circuit behaves the way you want. You have to physically relocate the power feed the way the DRL fuse used to do it. That’s why I like the fuse tap method—it keeps the workflow straightforward: DRL fuse out, fuse tap in, 12v to the DRL plug port, then you manage it from there.
And yeah, for anyone worried about fuel efficiency: running DRLs doesn’t magically steal your MPG like adding roof cargo does. DRLs use power, sure—but compared to the big aerodynamics hits we all chase while building, this stays pretty minor. My plan stays the same: keep the Prius efficient where I can, and only add the mods that improve the trip.
Gen 3 Prius DRL mod steps I followed
I decided to keep the process short and repeatable. Remove the DRL fuse. Then I used a fuse tap to feed 12v to the plug port where the DRL fuse used to be. When I turn the car on, the DRLs come on every time. If I need them off for a specific moment, I remove the wire from the DRL port.
That’s it. No mystery box. No guesswork. Just a clean electrical path.
Gen 3 Prius DRL mod: will you keep it always on?
What do you think—always on for visibility, or switched off when you’re parked? I like having the control because overlanding changes minute-to-minute. One minute I want that extra “I’m seen” factor, the next minute I want everything behaving exactly like I planned.
FAQ about gen 3 prius drl mod
Can I turn the DRLs off with the ?
Yes. With this mod, the DRLs stay on when the car is turned on. To turn them off, you remove the wire from the DRL port.
What’s the key part of the ?
I decided the fuse tap step is the key. I remove the DRL fuse and use the fuse tap to send 12v power to the plug port where that DRL fuse was removed.
If you want to keep building with confidence, stay active with the Prius community—Instagram followers and other Prius owners keep me honest when I’m testing something new. I’ll keep sharing the wiring details that actually work.
