All Pressure senders are designed to work with VDO gauges only, unless otherwise noted. Senders are matched to gauges according to maximum reading on dial face. All senders are standard ground (sender case to common ground) unless otherwise noted. Floating ground indicates the presence of an additional terminal to be used as a ground (isolated terminal to common ground). VDO senders have tapered threads. DO NOT use teflon tape or pipe sealant. This will interfere with grounding. All pressure senders are 10-180 Ohms unless otherwise noted.