Typical GM Cluster
PLEASE NOTE: We do not work on
Note: When inquiring about service via email, please send photos if
possible to help with your inquiry.
APT Instruments provides
complete speedometer repair and other automotive instrument and gauge repair, service and
conversion on all type vehicles from the 1890s to current year. Includes calibration
and warranty. Foreign or domestic, whether digital, electric, analog or
mechanical. Contact us for your instrument repair needs.
We service speedometers,
odometers, tachometers and small
gauges for cars, trucks, busses, agricultural or farm vehicles, boats, exercise equipment,
industrial and military equipment, tractor-trailers, recreational vehicles, snowmobiles,
We specialize in
fast turnaround on most
late model repairs. We service most brands of gauges, including VDO, Stewart Warner,
Smiths, Motometer, Clark Brothers, Murphy, AC Delco, King Sealy, Nippon Denso, Nippon
Seiki, Veglia, French Jaeger, Faria and more.
One year warranty/unlimited miles on most.
Call APT Instruments at
952-881-7095 for your speedometer repair and
other gauge repair.
For your assistance, we have provided a Troubleshooting
Guide and instructions for conducting Ratio Tests.
Remember, before packing your gauges for shipping to APT, see our S&H Instructions
and please include our Customer Information Form in the