User Manual
Tinted Series – 0 ~ 10,000RPM - 2’’ Tachometer 
Product Number: GS-T10 
Wire Color Code 
Red 
12v Ignition (switched) Source (+) 
Green 
Engine Tachometer Signal 
Orange 
12v Dimmer (switched) Source (+) (Usually Headlights) 
Black 
Vehicle Ground (-)  
1. Disconnect the negative battery cable. 
2. Using automotive grade wiring (18 gauge), connect 
the red wire to a positive 12 volt ignition (switched) 
source. It may be connected to the fuse panel, an 
accessory wire, or any positive 12 volt source that 
turns on and off with the ignition switch of the 
vehicle. 
  If wiring to an un-fused source, install a 3 
amp fuse inline within 20 inches of the 
sources connection. You may obtain an 
optional “add a circuit” accessory. This 
component easily fits into your fuse panel and 
provides an additional fused power wire for 
accessories such as gauges. This is available 
at www.GlowShift.com or a local auto parts 
store. 
3. (Optional) The dimming feature of the Tinted 
Series decreases the brightness of the lighted gauge 
face 30%. Connect the orange wire to a positive 12 
volt switched source. The most common installation is 
to splice and connect to the 12 volt positive headlight 
source. This step is completely optional. 
  This gauge should never be connected to a dimmer. 
Connecting the gauge to any type of dimmer switch 
unit will cause the gauge to improperly function. 
4. Connect the black wire to any good (unpainted) ground 
connection. You may also route a wire directly to the negative 
side of the vehicle’s battery.  
5. Connect the green wire to the vehicle’s tachometer source 
wire. You must consult your manual to ensure proper 
connection. If connecting to an aftermarket ignition system, be 
sure to follow the manufacturer’s instructions for connecting a 
tachometer. Please consult a service manual or mechanic before 
installing. 
  Tachometer Test Port: Some vehicles may have a 
tachometer test port or wire to obtain a tach signal from. 
Consult your owner’s manual, dealer or licensed mechanic to 
confirm. 
  Tachometer Adapter: It may be necessary to install a 
Tachometer Adapter if you have a multiple coil system. You 
can purchase a Tachometer Adapter from local auto parts 
store. 
  Tachometer Filter: It may be necessary to use a Tachometer 
Filter if you vehicle has an points style ignition system. You 
can purchase a Tachometer Filter from www.GlowShift.com 
or an Authorized Dealer. 
7. Use the Cylinder Selection Switch to set the number of engine 
cylinders on the tachometer to match that of your vehicle. 
8. Reconnect the negative battery cable. 
  Be sure all of your wiring is correct for proper gauge operation. 



