Hopefully this is the right place to post this issue..if not please move it to the proper location....This past weekend I was at the deer lease and switched my truck to 4wd or at least I thought I did...the light was on but the front differential never engaged. Tried it on both 4WD hi and lo but nothing happened...result was had to use a tractor to pull it outta the mud. I looked at my fuses but wasn't able to identify the fuse for the 4wd..has anyone ever seen this before?