If neccessary, refer to the 12A or 13B wiring diagrams. Wire color notation used below is for 1979-1985 models according to 1985 Workshop Manual 1110-10-84G printed by Mazda Motor Corporation, July, 1984.
NOTE: The information on this sheet is provided to you on an “as is” basis with no representation or warranty of accuracy whatsoever. It is the sole responsibility of the installer to check and verify any circuit before connecting to it. Only a computer safe logic probe or digital multimeter should be used. The installation in each and every case is the sole responsibility of the installer performing the work. The information supplied is a guide only.
REMOTE STARTER INSTALLATION
The following information is provided as a reference guide for remote starter installation. As always, we recommend that you use a digital voltmeter to perform all wire tests. Test lights can seriously damage vehicles on board computers and cost you big $$$$. We also recommend that all wiring connections be soldered to assure a solid lasting connection. Avoid routing any wires near any sharp objects under the dashboard, pay special attention to wires routed through the firewall. Split looming is a good idea for wires running through the engine compartment, if you don’t have any available to you, taping the full length of the wire will also add some protection.
Before getting started
Take a few moments to give the car a once over – check all the switches and systems in the vehicle as well as the exterior lights to make sure that they are working properly and note any defect before beginning your installation. In the case of a remote starter installation you should also listen to the engine to make sure that it is running properly.
Ignition switch wiring
The major connections for your remote starter are done at the key switch – IGNITION, ACCESSORY, STARTER – and in most cases POWER. These wires are usually easy to find, coming off the vehicle’s ignition switch. These wires are typically large in gauge however; they can be small gauges as some cars use these wires to control remote relays for all the vehicles operations instead of the wires themselves.
White/Red on 12A and 13B models. The power wire for your car starter should be connected either directly at the battery or to the wire that supplies power to the vehicle’s ignition switch. Some vehicles have more than one wire supplying the key switch but may be fused differently. A good example of this is the dodge intrepid, there are 2 constant power wires at the ignition switch, both are the same gauge, RED & PINK/BLACK. The RED wire is fused at 20 amps and the PINK/BLACK is fused at 40 amps, connecting a remote starters power lead to the RED wire would eventually result in a blown fuse as most remote car starters draw much more than 20 amps. If your remote car starter has 2 power wires you can connect 1 power wire to each of the vehicles power wires. Determine which one is used to supply the accessory output and connect that wire to the power wire that can handle the higher load.
Black/White (IG1) and Black/Yellow (IG2) on 12A and 13B models. This wire supplies power to the vehicle’s ignition system and fuel pump. It shows between 10 and 14 volts with the key in the RUN and CRANK positions of the key switch. 1st generation RX-7s have 2 ignition wires; all ignition wires should be connected when installing a remote starter.
Blue on 12A and 13B models. This wire supplies power to the vehicle’s blower and heater/Ac controls. It shows between 11.5v and 14v with the key in the ACCESSORY and RUN positions of the key switch.
Black/Yellow on 12A models, Brown or Brown/Red on 13B models. This wire supplies power to the starter solenoid to crank the engine. It shows between 11.5v and 14v with the key in the START position of the key switch. Many of today’s vehicles have a second starter wire which control a sensor that help starting in cold weather, this wire should always be connected.
Parking light wire
Red/Green on 12A and 13B models – not connected directly at ignition switch, this wire connects to the combination switch and shows voltage when the parking/illumination lights are turned on.
Red @ combi switch, White/Red after 10A fuse, Green/White after 15A fuse. This wire can be found at the switch harness above the brake pedal, it shows between 11.5v and 14v when the brake pedal is depressed. This wire can also be found in the harness going to the rear of the vehicle or at the brake light itself.
Proper connection of your ground wire is essential for your car starter to function properly as it relies as much on this wire as it does on the Tachometer wire to start the vehicle properly and read tachometer pulses. This wire should always be connected to a clean unpainted metal surface in the kick panel or firewall. Grounding directly at the battery terminal is not recommended.
Your remote starter requires a tachometer reference signal to monitor when the vehicle has started so it can disengage the starter. The vehicle’s tachometer reference wire can usually be found on the engine distributor or coil pack or at the ECM (power control module) or PCM (power control module). First look for the vehicle’s ignition coil or coil pack by following the spark plug wires (if possible) to where they junction together at a distributor. You can usually located a small wire harness at this location were a tachometer reference can be found. If the distributor appears to be supplied via a spark plug wire from another module this will be the coil and will also have a tachometer reference wire. A fuel injector is also a source of tachometer pulses, however this provides a signal for only 1 cylinder so make sure the car starter you are installing can be programmed for this setting. Tachometer reference can almost always be found at the vehicle’s computer but this is not always easy to access, see the vehicle’s data sheet for the recommended tachometer wire and location.
Always make all your connections before installing you main power fuse and be sure to program and test all functions properly before closing up you installation.
In closing Use tie wraps or screws to properly secure the starter module and keep the wiring away from any moving parts such as parking brakes or steering column shafts. Mount any switches in a good accessible location where they won’t get kicked or hit accidentally.