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Thread: wiring 70 hp johnson 1987
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07-08-2015, 11:13 PM #1Junior Member
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wiring 70 hp johnson 1987
Would anyone have an accurate wiring diagram of a 70 hp johnson 1987?
I just bought it rebuilt and will use a seastar control and ignition switch. The 2 online manuals I bought have errors on just about everything. No luck on the web. Original shop manual on it's way but 2 - 3 weeks to get to me.
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07-08-2015, 11:56 PM #2
The wire colors at the dash should be:
Red - 12V positive
Black - 12V Negative
Black/Yellow Stripe - Ignition Kill
Purple - 12V Positive with Ignition On
Blue/White Stripe - Choke/Primer
Yellow/Red Stripe - Start
Gray - Tachometer Signal
The trim Harness will be:
Red -12V Positive to switch
Blue - Up Circuit to switch
Green - Down Circuit to switch
Brown - Trim Sender
Black - Trim Sender Ground"One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors". Plato .
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07-09-2015, 08:09 AM #3Junior Member
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Thanks for the fast reply. All colours match on the motor.
Next question:
It should look like this on my switch?
Provide + for gauges from pin A
Neg from first pin M
Ground Black/Yellow Stripe - Ignition Kill from 2nd M pin.
B = Red - 12V positive
M = Black - 12V Negative
2nd M = Black/Yellow Stripe - Ignition Kill
A = Purple - 12V Positive with Ignition On
C = Blue/White Stripe - Choke/Primer
S = Yellow/Red Stripe - Start
Outside my switch to rpm gauge = Gray - Tachometer SignalLast edited by Ram_Boat; 07-09-2015 at 08:18 AM. Reason: trying to get the picture to show clearly
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07-09-2015, 04:24 PM #4
Yes.... you got it......
"One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors". Plato .
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