ISSPRO R8900 User Manual
Page 2
Pub. # 00001 (2/4/03 Rev. B) Page 2 of 2
BLUE SIDE
FRONT OF ENGINE
HARMONIC BALANCER
EXISTING FRONT OIL PAN BOLT.
SENSOR
ASSY
1/8"
1/4"
*
EXISTING OIL PAN.
*
**
*
*
INSTALLATION DIAGRAM: R8503 2 1/16" Tachometer
for 6.2/6.5 Liter GMC Diesel Engine.
SENSOR KIT: R8900
MAGNET REPLACEMENT: R8911
SENSOR REPLACEMENT: R8900-SO
MAGNET (2 plcs)
(BLUE SIDE OUT)
ON HARMONIC BALANCER (180° APART)
IGNITION SWITCHED +12 VDC.
RED WIRE: CONNECT TO
WHITE WIRE TO SENSOR
AND INSTALL MAGNETS USING GLUE.
SELECT ANY TWO OPPOSITE LOCATIONS
LENGTH TO SUIT (Not Furnished).
#20 AWG (Or Larger) EXTENSION WIRES.
BLACK WIRE TO SENSOR
AND TO GROUND.
MOUNTING BRACKET
(OPTIONAL)
ISSPRO R8503 TACHOMETER
3 WIRE CABLE
THE OTHER WIRE TO GROUND
ONE WIRE TO DASH LIGHT CIRCUIT.
MOUNTING BRACKET
MOUNTING HARDWARE
WHITE SENSOR WIRES