Wiring Harness (1 Wire 3 Pin Connector) (AFWB and EL Lit Gauges Only) A-110 Wire harness for: All Performance and Classic line tachometers Air-fuel Gauges (narrow and wideband) $7.16
Spin Lock Ring for 2 1/16" & 2 5/8" Gauges (EL Lit) A-203 Replacement Spin Lock Ring for 2-1/16" and 2-5/8" gauges. If you want to use this Spin Lock Ring with a 2-5/8" gauge, you will also need a 2-5/8" Mounting Ring Adapter. $4.77
In-Line Fuse (Includes 3A Fuse and Butt Splice Connectors) A-162 In-line Fuse - Use in line with up to 10 Speedhut gauges. 20 AWG Wire 3A Fuse Water Tight Includes 2 butt splice connectors Directions: Cut the wire in half Strip both ends Use Butt Splicers for the connections $7.16
Wiring Harness - for Standalone Air/Fuel Wideband, 8-foot A-307 8-foot wire harness for the Standalone Air/Fuel Wideband (Performance and Classic Lines) $36.92
2-5/8" Mounting Ring Adapter (For EL Lit gauges) A-192 2-5/8" Spacer Mounting Ring Adapter is for mounting 2-5/8" gauges. This adapter is included with every 2-5/8" gauge. It is made from tough nylon plastic.Using a Spin Lock Ring, this adapter allows you to mount a 2-5/8" gauge into a 2-5/8" inch hole. How... $3.59