I recently purchased a 2007 420FM rancher. Plain jane with camo graphics, foot shift and FI. It has heated grips that unfortunately are not working. The switch is mounted on side of bike in front of handlebars. Is this factory install from Honda? How can I check to see what the issue is? Also the instrument cluster is just bulbs. No graphics. The 4 wheel drive is engaged but the instrument light isn't on. Can these bulbs be changed easily? I don't have a manual yet so just thought someone else might have some insight. Thanks.