The instrument cluster printed circuit boards are one of the areas that are often never considered or thought of because of what they are and where they're located on 1987-1993 Fox Body Mustangs. Well, if you have issues related to the cluster, the printed circuit board could potentially be the issue. Below is a rundown of the printed circuit boards.
The printed circuit boards move information through the vehicle relative to the circuitry that is within the instrument cluster. Problems you'll see from a damaged circuit board are: inaccurate or no reading from the gauges, cluster lighting issues, or alternator charging problems if the resistor is damaged or missing.
You'll see these sold as three options: a 1987-1989 primary board, 1987-1989 secondary board (GT only), and a 1990-1993 primary board. Each circuit board is specific to the cars originally equipped with a 5.0L engine.
Product Links
87-89 Primary Circuit Board: lmr.parts/LRS-10843B
87-89 Secondary Circuit Board (GT Models): lmr.parts/LRS-10843C
90-93 Primary Circuit Board: lmr.parts/LRS-10843D
Shop Instrument Cluster Parts: lmr.com/products/79-93-Mustan...
Watch
Instrument Cluster Removal: • How To Remove Fox Body...
Tool List
Soft Brush
Microfiber Towels
Mild Cleaner (This must be safe enough to use on the instrumentation modules)
Nitrile Gloves
T-15 Torx Driver
Needle Nose Pliers
Torque Specs
Cluster Lens to Housing Screws - Finger Tight (or until the screw contacts the lens)
Instrument Module Bezel to Housing Screws - Finger Tight (or until the screw contacts the bezel)
Chapters
00:00 - Video intro & part explanation.
01:27 - Printed circuit board fitment information.
02:29 - Other parts to consider.
03:13 - Explaining the alternator charging resistor.
03:48 - Other videos to consider & installation notes.
04:59 - Removing the cluster lens.
05:18 - Remove the secondary circuit board (87-89 GT only).
05:45 - Remove the bezel & separator plate.
06:12 - Remove rearward attaching hardware & anti-slosh module.
06:34 - Disassemble the instrumentation modules.
07:05 - Depressing the metal clips, loosening the bulb sockets, & removing the existing circuit board.
07:37 - Clean the cluster housing & put on some nitrile gloves.
07:47 - Install the new circuit board.
07:58 - Clean the existing bulb socket terminals & reinstall the sockets into the cluster.
08:17 - Clean & transfer the metal clips.
08:33 - Reinstall the instrumentation modules.
08:55 - Carefully clean the cluster components.
09:09 - Reposition the separator plate & bezel.
09:22 - Reinstall the rearward attaching hardware & anti-slosh module.
09:31 - Install the new secondary circuit board (87-89 GT only).
09:41 - Reposition the needles & reinstall the cluster lens.
09:55 - Changing the alternator charging socket (reference notes in the video).
10:11 - Final thoughts & outro.
#lmr #foxbodymustang #restoration
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31 май 2024
