Ok so I have the Acewell gauge and the Zeva fuel gauge adapter in my hot little hands and I thought I should test them out. I tested the Acewell alone with a 12volt battery and a good hot cup of water. This checked the temp gauge, clock etc. Using some fly leads I confirmed I could turn on and off every warning light. All good.
So today I went over to a friends place and hooked up the devices to his working test bed. Now if every thing was to work the Tacho would read 10 times the amps and you know what… it worked perfectly.