After Market Fuel Gauge 1966 Dart?

I ran a ground from the fuel tube on the sending unit to a ground on the unibody. I will check it. Did you splice the Auto Meter in and left the old one place, or just by passed the original? Thanks

I just put in an autometer 73-10 ohm in my 63. I also have an aftermarket sender in. I tried splicing it in and running in parallel with the existing fuel gauge but did not work - the autometer just kept cycling to half full and back. I suspect with two gauges it upset the resistance readings. I now just the run the autometer. Can't comment on accuracy yet only been in a month.