displaying afr externally

[Denali]

hello,
is there a way to have the ECU use one of its outputs to show the afr or lambda on an external gauge ? we would rather not have to weld in a second bung for a seperate afr gauge setup, this is for a snowmobile with a new tune so we would like to keep an eye on the afr for the first while.

[MarkMc]

The only external gauges we have are our data loggers or mini dash displays.