07 Dodge Nitro high beams won't stay in dual burn. Flashes then back to single burn.

SOURCE: 2001 dodge ram high beam indicator stays on

you likely have the wrong bulb in the headlight

SOURCE: High/low beam

it very possible it could be in the switch itself but check the relay first which is usually located under the hood in the relay box

SOURCE: Headlights staying On

You probably have a faulty sentinel switch. It's supposed to shut off, has a bult in elctronic timer. Does it even have the sentinel switch?

SOURCE: 2001 dodge 1500 van, headlights stay on always.

It the multi-function lever (turn signal) . When you pull back the handle ,this turns on the high beams headlights and indicator on the dash.

SOURCE: the high beam switch won't stay on for a 2000

Needs new dimmer switch.