First, get the correct TV cable. One for a late 80's Blazer with a 6.2 is a good application to use when buying a cable.
Next, you need to source the no-longer-produced TV cable bracket and extension rod. The bracket bolts to the back of the valley. The TV cable attaches to that bracket, then the rod attaches to the cable and to the throttle lever on the injection pump. I had to search through a few wrecking yards before I found mine.
1987 Jeep Grand Wagoneer...new 6.5 in process...diamond block, 18:1's, other goodies...