628 MALLORY | Alldatasheet
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PART NO. 628 INSTALLATION INSTRUCTIONS Parts Included in this kit: 1 RPM Activated Switch Part No. 628 1 “U” shaped crimp-on wire terminal 1 #6 x 1⁄4" sheet metal screw 2 #8 x 1⁄2" sheet metal screws Wiring Diagrams for the RPM Activated Switch Connecting to a HYFIRE
CONTENTS
The Mallory 628 Window RPM Switch is an RPM switch that is triggered from the tach terminal available on most aftermarket performance ignitions. It will not only activate at a particular RPM, but can also be set to de-activate at a second, higher, RPM. It can be used on 4, 6 (even-fire only), and 8 cylinder engines. NOTE: The Mallory 628 CANNOT be triggered from points or electronic distributor. It must be triggered from a tach output terminal. The 628 features two independent sets of switch contacts that switch other devices on or off when the selected RPM is reached. These contacts draw a maximum current of 5 amps. To switch more than 5 amps, you must use the RPM Activated Switch output to drive a high current relay, such as a horn or headlight (see illustrations). NOTE: The switch contacts are NOT connected electrically. This allows you to turn one circuit on and anoth- er off at the same RPM. GENERAL INFORMATION MOUNTING PROCEDURE Step 1 Disconnect the battery (–) cable to cut power to the system. Step 2 Mount the unit in an area away from hot engine components or extreme heat, such as exhaust manifolds, and away from moving parts, such as fans, belts, and linkages. Step 3 Mount the unit using supplied #8 x 1⁄2" sheet metal screws.
Connect the BLACK WIRE to engine or chassis ground. You can use the supplied “U” shaped terminal and #6 x 1⁄4" sheet metal screws to make this connection. If you are connecting the RPM Activated Switch to an after- market ignition system such as a Mallory HYFIRE®, use the same grounding location that the ignition uses. See Figures 4-9, pages 7-12. Step 2 Connect the RED WIRE to a 12-volt power supply, such as the ignition switch. You can use the same wire that provides power for your ignition as long as a ballast resistor is not wired in series with it. NOTE: Do NOT con- nect the RED WIRE to the coil (+) terminal. Connect it to the wire coming directly from the ignition switch. If your vehicle is equipped with loom resistance wire, you must provide an alternate power connection to the red wire. Step 3 The GREEN WIRE must be connected to the ignition system tach output.
- When using a Mallory ignition system, connect the GREEN WIRE to the TACH terminal. See Figures 2, 3 and 4.
- When using an aftermarket ignition with a TACH output, connect the GREEN WIRE to the TACH terminal. Check manufacture’s ignition instructions to find this location.
- Other aftermarket ignitions - Connect the GREEN WIRE to the tachometer lead terminal. Check manufac- turer’s ignition instructions to find this location. Step 4 To connect a device that you want to switch ON at the RPM setting you’ve selected, such as a shift light, connect one ORANGE WIRE to the device and the other ORANGE WIRE to a 12-volt power supply. Connect the remain- ing wire from the device to a ground. See Figure 5, page 8. Step 5 To connect a device that you want to switch OFF at the RPM setting you’ve selected, such as a nitrous solenoid, connect one PURPLE WIRE to the device and the other PURPLE WIRE to a 12-volt power supply. Connect the remaining wire from the device to a ground. See Figure 6, page 9. Step 6 Secure all wires to prevent contact with extreme heat, sharp objects, or moving devices, such as fans, belts, and linkages. Step 7 Recheck all wires and connections to ensure that they are correct before applying power. Step 8 Reconnect the battery (–) terminal cable. Start engine and check operation of the RPM Activated Switch.
RPM AND CYLINDER SETTING PRODEDURE The Mallory Window RPM switch has two RPM settings: a lower RPM to activate the switch, and a higher RPM to de-activate the switch. For example, suppose you have a nitrous system installed. You might want the nitrous to only come on above a certain RPM, but to protect the engine, you want to shut it off at an RPM just above your shift point. Step 1 Remove the four screws that hold the top cover in place, and remove the cover. Step 2 If you want 4 or 6 cylinder operation, click the 4 or 6 cylinder switch on the left side to the "ON" position. For 8 cylinder operation, both switches should be off. Step 3 Set the lower and upper RPM values by selecting an RPM value in the thousands (left-hand switch) and an RPM value in the hundreds (right-hand switch). Note that on the switch for the RPM value in the thousands A=10,000; B=11,000 and C=12,000. NOTE: For proper operation, the upper RPM switch should be set at least 200 RPM higher than the lower RPM switch. The RPM range is 1000 to 12,700 RPM for the low side, and 12,900 RPM for the high side. If you do not want to use the high-side deactivation feature, set the high-side switches to 12,900 (C9). Step 4 Replace the top cover and re-attach the screws. HIGH RPM LOW RPM 1000's 100's 0 12 34567 90123456789ABCDEF 0 12 34567 90123456789ABCDEF ON ON
4 CYL
6 CYL
CONNECT THESE ORANGE WIRES TO A DEVICE TO BE TURNED ON AT A SELECTED RPM CONNECT THESE PURPLE WIRES TO A DEVICE TO BE TURNED OFF AT A SELECTED RPM RED TO 12 VOLT SOURCE DO NOT CONNECT TO COIL + BLACK TO ENGINE BLOCK OR CHASSIS GROUND TO TACH CONNECT THIS HARNESS ACCORDING TO THE HYFIRE® INSTRUCTIONS APPLICABLE TO THE HYFIRE®, DISTRIBUTOR AND COIL BEING USED TO BATTERY + TERMINAL USED FOR MAGNETIC PICKUP DISTRIBUTOR OR CRANK TRIGGER TO ENGINE BLOCK OR CHASSIS GROUND HYFIRE ® IV IGNITION SYSTEM GREEN PART NO. 628 WINDOW RPM ACTIVATED SWITCH RPM A CTIVATED SWITCH WITH HYFIRE ® IV FIGURE 2
CONNECT IGNITION COIL AND DISTRIBUTOR/TRIGGER WIRES ACCORDING TO THE HYFIRE VII INSTRUCTIONS APPLICABLE TO THE DISTRIBUTOR/TRIGGER BEING USED DO NOT CONNECT TO COIL + CONNECT THIS WIRE TO A SWITCHED 12 VOLT SOURCE. SWITCH MUST BE CAPABLE OF SWITCHING ALL OF THE CURRENT FROM THE IGNITION AND DEVICE(S). THE IGNITION MAY DRAW UP TO 1/2 AMP. MINIMUM OF 18 GA WIRE SHOULD BE USED. CONNECT THESE PURPLE WIRES TO A DEVICE TO BE TURNED OFF AT A SELECTED RPM. NOTE: RELAYS ARE REQUIRED IF THE DEVICE BEINGSWITCHED DRAWS MORE THAN 5 AMPS. CONNECT THESE ORANGE WIRES TO A DEVICE TO BE TURNED ON AT A SELECTED RPM. PART NO. 628 WINDOW RPM ACTIVATED SWITCH RPM A CTIVATED SWITCH WITH HYFIRE ® VII FIGURE 3
CONNECT IGNITION COIL AND DISTRIBUTOR/TRIGGER WIRES ACCORDING TO THE HYFIRE VII INSTRUCTIONS APPLICABLE TO THE DISTRIBUTOR/TRIGGER BEING USED DO NOT CONNECT TO COIL + CONNECT THESE WIRES TO A SWITCHED 12 VOLT SOURCE. SWITCH MUST BE CAPABLE OF SWITCHING ALL OF THE CURRENT FROM THE IGNITION AND DEVICE(S). THE IGNITION MAY DRAW UP TO 1/2 AMP. MINIMUM OF 18 GA WIRE SHOULD BE USED. CONNECT THIS WIRE TO THE DEVICE TO BE TURNED ON AT A SELECTED RPM. CONNECT THE OTHER WIRE FROM THE DEVICE TO THE GROUND. CONNECT THIS WIRE TO THE DEVICE TO BE TURNED ON AT A SELECTED RPM. CONNECT THE OTHER WIRE FROM THE DEVICE TO THE GROUND.NOTE:RELA YS ARE REQUIRED IF THE DEVICE BEINGSWITCHED DRA WS MORE THAN 5 AMPS. T HES RELAYS ARE SHOWN AS EXAMPLES ONLY. OTHER RELAYS MAY BE USED SUCH AS BLUE STREAK PART NO. RY-48. PART NO. 628 WINDOW RPM ACTIVATED SWITCH RPM A CTIVATED SWITCH AND RELA YS WITH HYFIRE ® VII FIGURE 4
(NOT USED) ORANGE WIRES (NORMALLY OPEN - CLOSES/“ON” AT THE RPM SETTING) TO 12V SOURCE ORANGE 18AWG WIRE PART NO. 618-1 HIGH SPEED RETARD PART NO. 628 PART NO. 628 PART NO. 628 PURPLE WIRES (NOT USED) RED, GREEN AND BLACK WIRES: SEE PAGES 5-12 ORANGE WIRES (NORMALLY OPEN - CLOSES/“ON” AT THE RPM SETTING) TO 12V SOURCE ORANGE 18AWG WIRE (#21) REMOTE TIMING CONTROL IGNITION SYSTEM PART NO. 631 PURPLE WIRES (NOT USED) RED, GREEN AND BLACK WIRES: SEE TO 12V SOURCE ORANGE WIRES TO 12V SOURCE ORANGE WIRES ORANGE WIRES: OR NOTE: TO TURN LIGHTS “OFF” AT RPM SETTING - EXCHANGE THE ORANGE WIRES AND THE PURPLE WIRES. RED, GREEN AND BLACK WIRES: SEE PAGES 5-12 TIMING RET ARD “ON”A T RPM SETTING TIMING CONTR OL “ON”A T RPM SETTING LIGHT “ON”A T RPM SETTING FIGURE 5
MANUAL SHIFTING: TURN SWITCH “OFF” TOGGLE SWITCH PART NO. 26074 PAR T NO. 628 PAR T NO. 628 PAR T NO. 628 TO 12V SOURCE ORANGE OR PURPLE WIRES RED, GREEN AND BLACK WIRES: SEE PAGES 5-12 RED, GREEN AND BLACK WIRES: SEE PAGES 5-12 RED, GREEN AND BLACK WIRES: SEE PAGES 5-12 MANUAL SHIFTING: TURN SWITCH “OFF” TOGGLE SWITCH PART NO. 26074 TO 12V SOURCE ORANGE OR PURPLE WIRES MANUAL SHIFTING: TURN SWITCH “OFF” TOGGLE SWITCH TO 12V SOURCE ORANGE OR PURPLE WIRES HR - 106 1 3 5 USE ORANGE WIRES TO TURN “ON” AT LOW RPM SETTING. USE PURPLE WIRES TO TURN “OFF” AT LOW RPM SETTING. USE ORANGE WIRES TO TURN “ON” AT LOW RPM SETTING. USE PURPLE WIRES TO TURN “OFF” AT LOW RPM SETTING. USE ORANGE WIRES TO TURN “ON” AT LOW RPM SETTING. USE PURPLE WIRES TO TURN “OFF” AT LOW RPM SETTING. ELECTRIC (SHIFTER) SOLENOID FIGURE 6
PART NO. 628 BLACK WIRE GROUND GREEN WIRE TACH TERMINAL RED WIRE 12V IGN. SWITCHORANGE WIRES OPTIONAL SWITCH B&M PRO RATCHET SHIFTER NEUTRAL SAFETY TO 12V TO STARTER SWITCH TO 12V SHIFNOID INTERFACE RELAY COMMON NORMALL Y OPEN NORMALL Y CLOSED 87A (NOT USED)86 85 SHIFNOID WIRING FOR A B & M RA TCHET SHIFTER W/SN5070 SOLENOID FIGURE 9
MALLORY IS A DIVISION OF THE MR. GASKET PERFORMANCE GROUP
550 MALLORY WAY, CARSON CITY, NV 89701
(775) 882-6600 FAX (775) 887-4326 www.mrgasket.com FORM #1471 (REV. A) 7/99 MADE IN U.S.A. PRINTED IN U.S.A.