1 2 3 4 5 6 7 8 9 10 11 12
Gnd 12v Aux C-
Dig
In
Mag
Out
Pts
Stg
Lim
Nit
Ret
Mag
In Gnd Knk
Gnd
J&S Electronics
13925 Parkway Dr. Garden Grove, CA 92843
(714) 534-6975 www.jandssafeguard.com
SafeGuard main harness connector at rear of unit
Ignition Coil
+ -
12v from key
Bosch Knock Sensor
Triggering from points or OEM electronic Ignition
1 2 3 4 5 6 7 8 9 10 11 12
Gnd 12v Aux C-
Dig
In
Mag
Out
Pts
Stg
Lim
Nit
Ret
Mag
In Gnd Knk
Gnd
SafeGuard main harness connector at rear of unit
12v from key
12v trigger
• Points
• Electronic Ign
• ECU (FAST, etc)
Bosch Knock Sensor
Figure 1 “Points in, Points out”
Figure 2
Ignition Coil
+ -
MSD 6
MSD Black
MSD Orange
Green
Violet
MSD White
Green
Red
Black
J&S Blue
Green
White
Black
Red
Use J&S “Aux” output to trigger MSD White wire.
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
Do Not Use Solid Core Plug Wires
Universal Installation
(various triggering methods shown)
