I can handle that. Don't have the instructions.
Metal with iron in it, high current flow like the trolling motor power cable, and magnets inside the trolling motor are a few you have to avoid.
The HS is a compass.
You can static test with a regular compass, but then you have to check with the outboard and/or trolling motor operating and with the trolling motor stowed if you put it on the bow.
You can download the manual from the Humminbird website.
Edited by Wayne P. (09/19/15 02:22 PM)
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, 360, RC-1