Before connecting the ECU check the following: Install new spark plugs on engines that was standing for a long time. Service and test the injectors to ensure they all have the same fuel delivery and that the filters on them are clean. First ensure that the installation is correct according […]
Harness Part Number Explanation
Product Type Description Description Class Model Level M Mercury2 E ECU X Export 02 Number 2 Level T TCU W With ECU X Export 02 Number S Standalone X Export 02 Number I Injector S Straight 4 4Cyl X Export 1 Number 2 Level V V-Type 6 6Cyl 8 8Cyl […]
Harness Part Number Selection
Level 2 Main product harness Easy Install Harness ECU TCU with ECU * TCU Stand-Alone ** Mercury2 MEX02-2 MTWX02-2 MTSX02-2 * This unit is used with an ECU. The TPS and RPM input wires are single wires and must be connected […]
Harness Levels
To make ordering easier we categorize harness’s in different groups. The price increase as level increase but the installer will save time on his side. Spitronics mostly supply Level 1 and 2 due to the product being sold in the DIY category. Some third party dealers may supply the Level […]
Fuel Pressure Control
The Mercury2 ECU has the feature to control fuel pressure by controlling the speed of the fuel pump. This is done with Pulse Width Modulation (PWM) from the power that is supplied to the fuel pump. In some cases, the positive driver of the Mercury2 is strong enough to directly […]
Tachometer
The Tachometer can be connected on the ECU and be calibrated in software. There are a few different ways to connect it as there are many different tachometers. Types are Digital Magnetic and Coil connections. Make sure you chose the correct option as it may damage the tachometer. Note that […]
General Purpose
The general purpose outputs could be used for numerous control on the engine. Each option requires different wiring. The outputs of the ECU may be strong enough to drive certain units directly and others may require a relay or amplifier. Click on the link below for the different wiring diagrams. […]
Cam Control
The ECU could be used to control 2 VVTI Cams on the engine. The outputs of the ECU may be strong enough to drive most solenoids directly. Some may require an Electronic relay or amplifier. Drivers may be positive or negative. View the GP priority sheet or look in the […]
Idle Control
There are different methods to cater for most types of idle control motors found on the different engines. Make sure you select the correct wiring procedure for positive or negative driver outputs. When a certain type is selected the software will indicate on which output it must be connected. You […]
Low Impedance Injectors
These drawings explain only how the injectors are connected for each driver. The amount of connections will vary with engine size. (See specific drawings for your application.) Batch & Split Sequential Wiring With this method you always combine 2 drivers in series. This will lower the voltage to each of […]