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J&S Electronics
13925 Parkway Dr. Garden Grove, CA
(714) 534-6975 www.jandssafeguard.com
Universal Installation
Triggering from points or OEM electronic Ignition
1 2
3 4
Gnd 12v Aux
Black
Gnd
Red
12v from key
+
Ignition Coil
Do Not Use Solid Core Plug Wires
1 2
3 4
Gnd 12v Aux
Black
Gnd
Red
12v from key
J&S Blue
MSD Orange
MSD Black
+
-
Ignition Coil
92843
(various triggering methods shown)
5 6 7
8 9 10 11 12
Dig
Mag
Stg
Nit
Mag
C-
Pts
In Gnd Knk
In
Out
Lim
Ret
Green
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
White
-
Figure 1 "Points in, Points out"
5 6 7
8 9 10 11 12
Dig
Mag
Stg
Nit
Mag
C-
Pts
In Gnd Knk
In
Out
Lim
Ret
Green
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
Violet
Green
MSD White
SafeGuard main harness connector at rear of unit
Bosch Knock Sensor
SafeGuard main harness connector at rear of unit
Bosch Knock Sensor
MSD 6
Use J&S "Aux" output to trigger MSD White wire.
Figure 2
12v trigger
• Points
• Electronic Ign
• ECU (FAST, etc)
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Related Manuals for Jands SafeGuard
Summary of Contents for Jands SafeGuard
- Page 1 Universal Installation (various triggering methods shown) Triggering from points or OEM electronic Ignition 5 6 7 8 9 10 11 12 SafeGuard main harness connector at rear of unit Gnd 12v Aux In Gnd Knk Black Bosch Knock Sensor 12v from key...
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Page 2: Ignition Coil
GM HEI White Green Triggering from Magnetic Pickup Violet Green 5 6 7 8 9 10 11 12 SafeGuard main harness connector at rear of unit Gnd 12v Aux In Gnd Knk Black Bosch Knock Sensor 12v from key Note: Shield and black are connected under shrink Distributor sleeving. - Page 3 3) Feed the other end of the cable through the firewall. 4) After determining where the SafeGuard will be mounted, route the cable to the SafeGuard. 5) Insert the Red wire of the knock sensor cable into the pin labeled “Knk”.
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Page 4: Safeguard Installation
(714) 534-6975 www.jandssafeguard.com SafeGuard Installation 1) The SafeGuard control unit must be mounted inside the passenger compartment. We recommend hiding it under the carpet on the passenger side. The supplied harness is ten feet in length. This allows you to connect either in the engine compartment or directly to the ECU. - Page 5 J&S Electronics 13925 Parkway Dr. Garden Grove, CA 92843 (714) 534-6975 www.jandssafeguard.com 10) Start the car. The Status LED should blink during cranking. If it doesn’t blink, the unit is not receiving or processing triggers. If the car runs normally, skip to step 13. If the engine doesn’t start, leave the key on, and use a voltmeter to make sure that 12 volts is getting to the connector on the Black and Red wires.
- Page 6 J&S Electronics 13925 Parkway Dr. Garden Grove, CA 92843 (714) 534-6975 www.jandssafeguard.com 18) Boost Retard: Switch 8 up calibrates the MAP sensor for Boost Retard. The Start knob sets at what boost pressure the boost retard begins. Fully CCW, the boost retard starts at zero psi. The TP (Test Point) is calibrated in volts per psi. Zero volts equals zero psi.
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Page 7: Operation
20° knock control range (mode switch #1 up), each LED is worth two degrees of retard. If the SafeGuard is set for “Retard All” (mode switch #2 up), and it is taking out say, 12° of timing, then you would see the 6th LED on.