Well, when forward motion ceases but continues from a dead stop after flicking the switch, you know are locked.
When you were spinning a wheel or two a moment ago and now you are spinning none or all four (my personal favorite), you know you are locked.
When the steering becomes heavy and disagreeable, you know you are locked.
When those meats start to chirp and slip while you are in a turn, you know you are locked.
When you make it over Rubicon in one day (no camping) during winter without destroying your rig or winching every five minutes, you absolutely, positively had to have been locked.
But mostly I rely on my 27 years of experience with and without lockers and that seat of the pants feel I get when my lockers are locked. Hope this helps.....
When you were spinning a wheel or two a moment ago and now you are spinning none or all four (my personal favorite), you know you are locked.
When the steering becomes heavy and disagreeable, you know you are locked.
When those meats start to chirp and slip while you are in a turn, you know you are locked.
When you make it over Rubicon in one day (no camping) during winter without destroying your rig or winching every five minutes, you absolutely, positively had to have been locked.
But mostly I rely on my 27 years of experience with and without lockers and that seat of the pants feel I get when my lockers are locked. Hope this helps.....

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