On every cluster I've ever worked on the face plate comes off with the pointers and the stepper motors behind them. The motors just unplug from the circuit board. The circuit board is normally screwed to the other side of a plastic frame and can also be removed separately.
From what I can see it looks like that's the end of the copper circuit and you circled a "griplet" that connects to another circuit on the other side of the circuit board. GM had a huge problem with those in their car radios in the early '70s. GE tried that in their tvs in the late '80s and had all kinds of problems. The first thing you can try for the repair is to resolder them on both sides, but that is rarely a permanent fix. You must also scratch off a good 1/8" of the protective coating to expose the shiny copper circuit, then run the solder onto that copper too. Bridging a crack with solder must always include a small piece of wire to prevent the crack from forming again but that won't help here. (For cracked circuit boards I use one strand of wire from an old power cord). With griplets, you need to find any point on that circuit on one side of the circuit board, and another point on the other side of the board, and add a jumper wire between them. Some of them have a center hole that is large enough to feed a wire through after you melt the solder. With those, scratch 1/8" of coating off the copper traces and solder the ends of the wire to both sides.
Here are the wiring diagrams so you can see how the system works. Check out the diagrams (Below). Please let us know what happens.
Images (Click to enlarge)
Sunday, March 24th, 2019 AT 10:45 AM