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OLD MERC WIRING DIAGRAMS
CARBURETOR
SPECS AND DATA PROPELLER
APPLICATION DATA AND CHARTS
Wiring Diagrams
The linked color images are printable but will print across
more than 1 page (in order to be legible). Most models also have black-&-white-only
PDF files which
will
print the correct size on a standard sheet of paper
but require Adobe Acrobat Reader to open. Most diagrams
are
only
listed
as PDF for the moment but all will eventually have color versions posted.
Credit to:
Dan Kruitz, Technical Design & Support.
Larry Roberts, Data Contributions.
Tom Billings, Color Images.
All Merc Models thru 1965
- 350
(2cyl)........MercElectric Ext. Harness.(page bottom.) (PDF)
350 (2cyl).........MercElectric
Int. Wiring Diagram (PDF)
All 4 Cyl. (2 Lever control)........Ext.
Harnesses A29645, A39125 (PDF)
All 4 Cyl. (1 lever control)........Elect.
Starter Wiring Diagram (PDF)
600-700-800 (Direct Reversing)......Int.
Harness Connector (page top) (PDF)
600-700-800 (Direct Reversing).......Elect.
Starter & Ext. Harness (PDF)
700-800-850 (Full Gear
Shift)........Int. Conn. Color Code.(page top) (PDF)
700-800-850* (Full Gear
Shift).........Starter Wiring & Ext. Harness (PDF)
(*note: some use Merc 1000 type ignition system below)
700-800-850-1000 (Full
Gear Shift)...Starter Wiring & Ext. Harness (PDF)
950-1100.........Wiring
Diagram & Ext Harness (PDF)
950SS-1100SS.......Wiring
Diagram & Ext. Harness (PDF)
Mark 25E (Positive Ground)........Wiring
Diagram (PDF)
Mark 25E (Negative Ground)........Wiring
Diagram (PDF)
Mark 50E-55E (Postive
Ground).....MercElectric Starting Wiring (PDF)
Mark 75-78.........Internal
& External Harness (PDF)
Mark 75-78 (Elect. Starting).......Wiring
Diag. & Ext Harness (PDF)
Mark 75A-78A..........Electric
Starter Wiring Diag. & Ext. Harness (PDF)
Mark 75A-78A...........Internal
Harness Connector (page bottom) (PDF)
MercElectric Switches..........Ignition
& Starter Types (PDF)
1966 and newer
- Merc
200 (1970-71)..........Internal & External Wiring (PDF)
merc 200 (1972).............Internal
& External Wiring (PDF)
Merc 200 (Breakerless
Ignition)..........Internal & (2)External Wiring Diagrams (PDF)
Merc 200..........Internal
& External Wiring Diagram (PDF)
Merc 350 (MercElectric-2
Cyl.)........Internal & External Wiring Diagram (PDF)
Merc 400 (2 Cyl.)..........Internal
& External Wiring Diagram (PDF)
Merc 402 (2 Cyl.)..........Internal
& External Wiring Diagram (PDF)
Mercury 4 Cylinder (Magneto).........Internal
& External Wiring Diagram (IMAGE) (PDF)
Merc 500 Thunderbolt..........Internal & External Wiring Diagram (IMAGE)
Merc 500S-650S (Breakerless).........Internal & External Wiring w/Ignition Driver (IMAGE) (PDF)
Merc 500SS-650SS (Breakerless).........Internal & External Wiring Diagram (IMAGE) (PDF)
Merc 650 (3 Cyl.)..........Internal
& External Wiring Diagram (IMAGE) (PDF)
Merc 650-(800*)-850 Thunderbolt.......Internal* & External Wiring (IMAGE) (PDF)
(* serial #'s 2991033-below; 3052381-3059821; and 3307347-up)
Merc 800* Thunderbolt.........Internal & External Wiring (IMAGE) (PDF)
(*serial #'s 3051041-3052380 & 3144219-3192962)
Merc 950-1100.........Internal & External Wiring Diagram (IMAGE) (PDF)
Merc 950SS-1100SS........Internal & External Wiring Diagram (IMAGE) (PDF)
Merc 950-1000-1100-1250
(Breakerless).....Internal & External Wiring Diagram (IMAGE) (PDF)
Merc 1150-1350-1400-1500
Thunderbolt.....Ignition & External Wiring Diagram (IMAGE) (PDF)
MercElectric Switches........Starter
& Ignition types thru 1969 (IMAGE)
Merc Model 900-1150-1500........1976-78 Wiring Diagram (IMAGE)
Merc Model 70 HP........thru Serial # 5579016 Wiring Diagram (IMAGE)
Merc Model 70 HP........from Serial # 5579017 Wiring Diagram (IMAGE)
Merc Model 90 HP -115 HP -140 HP.......1979 ONLY Wiring Diagram (IMAGE)
Merc Model 90 HP -115 HP -140 HP.......1980 (Ser. 5594657 -up) Wiring Diagram (IMAGE) (PDF)
Merc V6.......... Models ser # 4301235 to 5129480 (IMAGE)
Merc V6 Models 150 HP 175 HP & 200 HP ser # 5124981 to 5363918 (IMAGE)
Merc V6 Models 150 HP 175 HP & 200 HP ser # 5363919 to 5464484 (IMAGE)
Merc V6 135 & 150 HP 2.0L Carb 1992-2000 (IMAGE)
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