Gas meter for underslung tank


Active Member
Jun 3, 2019
Hi all, firstly I hope your all keeping well and safe. I have been frantically building the van for Camp Quirky but today got an email to say it’s been postponed. Might get it finished by the new suggested date in October.
I have a Gas-it tank which I fitted under the van. I’m about to fit the meter that shows the quantity of gas in the tank. There are 4 wires coming from it red and black green and yellow. The red, green and black are ok but what’s the yellow wire for? If anyone has experience of fitting this meter I’d be grateful.