BDRIVER,
Warning bells went off in my little head reading about connection via AMP meter. If wired so current is passing through fan to supply amp meter instead of just using a leg of current source you could have problems.
It can be wired so only using as a tap but could also be wired so relay is passing all current to gauge and this will melt relay down.
Move wire suppling current to relay to any battery source to be sure or go point to point on wiring to verify how it was wired. Current or amps is different than voltage E=I/R . If you remove wire from relay supply and amp meter stops working you are toast..... This is a possible big problem or wire fire in waiting!!Must change to a voltage source only.
