There are two types. A feeder mounted light with an opto coupler that switches on at dark. Or with a wireless remote.

The other is a bow mount for the stabilizer hole with a grip mounted pressure switch. After you draw, and get generally on target you can grip the handle to engage the light.

I usually engage the light well above the target and slowly lower it until I I can aim. You still need trijicon sight pins or lighted pins. To see your sights.

The sight pins need to be very dim. Bright pins blind you and obscure the target. I use a single pin sight with thee brightness settings. The dim one is all I ever use.

The bow mounted light is bright. With a gun you could easily shoot 100-200 yards. However with a bow it turns things to green daylight in front of you.

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