Ignition wiring diagram

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How did you verify that the 20 amp ignition breaker isn't tripped?  Did you check the voltage on the input and output connections?
Did you check the 50 amp breaker on the back of the engine? Same as above, do you have voltage on the input and output connections?

On your Chevy, power to the dash has to get from the battery, to the starter positive terminal connection, to the remote solenoid, then through the 50 amp main breaker, through the 8 pin connectors,(pin5) then to the ignition breaker to power the dash and ignition switch.

So using a test meter or test light, you should be able to figure out how far power is making it from the battery and find your issue.

Here's a PCM diagram that shows the connections from the battery up to the 5 pin connector for your Chevy

After the 5 pin connector the wire goes to the input side of the 20 amp ignition breaker.

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KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11112	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Topic: Ignition wiring diagram Posted: May-25-2024 at 6:32am
	How did you verify that the 20 amp ignition breaker isn't tripped? Did you check the voltage on the input and output connections? Did you check the 50 amp breaker on the back of the engine? Same as above, do you have voltage on the input and output connections? On your Chevy, power to the dash has to get from the battery, to the starter positive terminal connection, to the remote solenoid, then through the 50 amp main breaker, through the 8 pin connectors,(pin5) then to the ignition breaker to power the dash and ignition switch. So using a test meter or test light, you should be able to figure out how far power is making it from the battery and find your issue. Here's a PCM diagram that shows the connections from the battery up to the 5 pin connector for your Chevy After the 5 pin connector the wire goes to the input side of the 20 amp ignition breaker.

Footer 1952 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: August-13-2010 Location: Somerset Cty Pa Status: Offline Points: 27	Post Options Post Reply Quote Footer 1952 Report Post Thanks(0) Quote Reply Posted: May-24-2024 at 11:47pm
	Ignition wiring diagram Mid 1980’s BFN or SN My boat 86 BFN Chevy 454. I unknowingly short circuited the plus side of ignition coil to ground. Whole electrical system dead. Ignition circuit breaker not tripped breaker less distributor installed years ago.. My manual only has dash wiring info. Entire dash is dead. Ignition switch blown??? Who would know without wiring diagram.
	Lets go footin' '86 Barefoot Nautique

Ignition wiring diagram

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