Review on Universal Imports 700-0231 XR-700 Points Replacement - Upgrade for 4, 6 or 8 Cylinder Engine Efficiency by Eugene Cox

I installed this on my 2000 69 Datsun, took an evening to install. It would have taken a lot less time if I hadn't been dealing with external wiring issues at the same time. There is an LED on the control box that lights up when it is supposed to spark. This is a great tool for engine static timing. Align the appropriate timing mark on the front pulley, then set the distributor to the point where the LED first illuminates.