Set the glow of your gauges just the way you want it with the Standard Ignition Instrument Panel Dimmer Switch DS-423, the control that adjusts the brightness of your instrument panel lighting. It fits many vehicles, among them the 1985-1995 Chevrolet Astro, 1985-1995 GMC Safari and 1985-1994 Chevrolet S10, and serves as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine details.
- Copper alloy conductors: designed for superior electrical conductivity with low resistive losses.
- 100% tested: every switch is checked to verify both mechanical and electrical switching performance.
- Robust build: a robust design and high-grade materials are intended to meet the stringent demands of today's service professional.
- Quality control: as a global manufacturer of original equipment ignition products, Standard Ignition keeps quality control in place throughout manufacturing, from componentry to the finished product, backed by decades of research.
If your dash lights stay dark, won't dim, or flicker as you adjust them, a worn dimmer switch may be to blame. Bulbs, fuses and wiring can produce the same signs, so diagnose the cause before replacing. If the original switch has failed, DS-423 replaces it.
Interchange: S7208 · UDS450 · DS512 · 15954529 · 1995245 · 1995293
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
S7208, UDS450, DS512, 15954529, 1995245, 1995293
Frequently Asked Questions
Is this the right Astro switch for dimming the dash lights on a 1985-1995 Chevrolet Astro?
DS-423 is listed as a direct-fit instrument panel dimmer switch for the 1985-1995 Chevrolet Astro and the 1985-1995 GMC Safari. Check the "Vehicles it fits" section to confirm your vehicle.
Can I use this as an S10 switch for the instrument lights on a 1985-1994 Chevrolet S10?
Yes, the 1985-1994 Chevrolet S10 is among the listed applications. The "Vehicles it fits" section shows every vehicle this dimmer switch fits.
What does an instrument panel dimmer switch do?
It controls the brightness of the instrument panel lighting, letting you raise or lower gauge illumination to suit day or night driving.
What are signs the dimmer switch may need replacing?
Instrument lights that won't dim, stay dark or flicker when adjusted may indicate a worn dimmer switch. Bulbs, fuses and wiring can cause similar symptoms, so diagnose first.
Is the Standard Ignition DS-423 tested before it ships?
Yes. Standard Ignition tests its switches 100% to verify both mechanical and electrical switching performance, and uses copper alloy conductors for low resistive losses.
