Because each installation is different, temperature probes and LEDs are not included with the purchase of this gauge and must be purchased separately.

What temperature probe do I need?

This gauge requires the purchase of a temperature probe. We recommend the 1/4" Street Probe Kit. It includes the temperature probe, 10 feet of low resistance thermocoupler wire, and two choices of mounting hardware. The probe can be mounted by welding on the included 1/8" NPT steel bung to the turbo manifold or downpipe. It can also be installed using the included band clamp and drilling a 1/4" hole in the exhaust piping.

Stewart Warner offers a variety of probe kits for all ranges of street and race use. We reccomend the street probe kit for maximum lifespan. High performance probe kits feature faster response but significantly shorter lifespan. 42 has not yet experimented with SW's high performance probe kits. Once we have worked with this kits we will offer them to our customers.

1/4" Street Probe Kit

Which LED do I need?

This gauge includes a white 194 light bulb. For the ultimate in visibility and color we recommend the use of a 194 LED. We offer a variety of LED options for this gauge including basic 194 wedge style LEDs, high intensity LEDs, and perfect match LEDs.

194 Wedge Style LEDs
Basic 194 wedge style LEDs are a great way to light a SW gauge. We have them available in 6 colors. Priced at $3 per LED, these LEDs provide an affordable and bright color change.

High Intensity 194 Wedge Style LEDs
Our new high intensity LEDs are the ultimate in brightness. When installed in a SW gauge these LEDs provide illumination which typically exceeds the brightness of most OEM gauge clusters. These LEDs are available in 5 colors and are priced at $8 per LED.

Perfect Match LEDs
Our perfect match LED system provides a perfect match to the OEM VW mk4 instrument cluster. The LED consists of a grouping of 6 LEDs exactly matching the wavelength of the stock cluster built into a custom base. To drive this LED our power regulator is required to regulate voltage and current. When installed in a SW black face gauge an OEM color match is achieved. SW perfect match LEDs are priced at $12 and the required power regulator is priced at $15.

194 Wedge Style LEDs
High Intensity 194 LEDs
Perfect Match LEDs

Recommended Electrical Accessories

We also offer a number of electrical accessories not included in the basic wiring kit. We have everything from crimpers to fuse boxes. For this gauge we recommend:

Scotchloks or T-Taps
Mini Inline Fuse Holder
Mini Fuse Add-A-Circuit

Installation Instructions

Installation instructions are included with any gauge purchase from 42. They are also available online for your convenience. Please visit our tech page for installation instructions pertaining to this gauge and your specific car. Also, check out our FAQ for common questions regarding SW gauges and installation.

Tech Corner
FAQ