Hi, just wondering if anyone has any experience of Acumen gear indicators? I have recently bought a storm and for some reason I'm finding it a little hard to tell what gear I'm in

(probably because it seems to pull in every gear). Also maybe down to the fact I've had a 7yr lay off from riding!!
I contacted a seller on ebay who said a plug in loom is not available, does anyone have any experience of this? or hard wiring one themselves due to the absence of a loom kit.
First post on here so be a little gentle, used the search facility and really didn't come up with anything
Claydo