Fuse Block
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Teching In
Joined: Sep 2020
Posts: 8
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Fuse Block Hey guys wiring up my LQ9 engine fuse block for a swap into my 86 K5 Blazer. Looking for some help on figuring out where things go to get power. I know all pinks run off ignition. The rest of them is what I’m having a problem with so let me start with what I believe to be correct. •starter solenoid- hot during crank
•Crank voltage- hot during crank and run, goes to ignition relay
•stop lamp- goes to brake light switch, hot when brakes are applied
•Starter enable relay control- goes to starter relay
• Battery Positive- straight to battery
• Park, Neutral start switch- hot with ignition
• stop lamp- goes to brake light switch, hot when brakes are applied
Now what I need to know
•fuel pump relay- is this to supply power through relay or to turn relay on?
•Trailer back up lamp? Power from column shifter? Relay between?
• Park neutral position switch-?
•TCC brake switch-?
•Cruise control release, I imagine signal from brake pedal? If so how?
•Ground- why is there a ground running into fuse block? What for?
•Crank voltage- hot during crank and run, goes to ignition relay
•stop lamp- goes to brake light switch, hot when brakes are applied
•Starter enable relay control- goes to starter relay
• Battery Positive- straight to battery
• Park, Neutral start switch- hot with ignition
• stop lamp- goes to brake light switch, hot when brakes are applied
Now what I need to know
•fuel pump relay- is this to supply power through relay or to turn relay on?
•Trailer back up lamp? Power from column shifter? Relay between?
• Park neutral position switch-?
•TCC brake switch-?
•Cruise control release, I imagine signal from brake pedal? If so how?
•Ground- why is there a ground running into fuse block? What for?
Hey guys wiring up my LQ9 engine fuse block for a swap into my 86 K5 Blazer. Looking for some help on figuring out where things go to get power. I know all pinks run off ignition. The rest of them is what I’m having a problem with so let me start with what I believe to be correct. •starter solenoid- hot during crank
•Crank voltage- hot during crank and run, goes to ignition relay
•stop lamp- goes to brake light switch, hot when brakes are applied
•Starter enable relay control- goes to starter relay
• Battery Positive- straight to battery
• Park, Neutral start switch- hot with ignition
• stop lamp- goes to brake light switch, hot when brakes are applied
Now what I need to know
•fuel pump relay- is this to supply power through relay or to turn relay on?
That is to trigger the relay, the power side (that runs through the relay and out to the pump) is from a fuse in the fuse box.
•Trailer back up lamp? Power from column shifter? Relay between?
Not sure
• Park neutral position switch-?
Uh not 100% sure what side of what we're talking about, but it should get power with key on only
•TCC brake switch-?
Gets a signal to pcm from brake switch
•Cruise control release, I imagine signal from brake pedal? If so how?
Brake pedal
•Ground- why is there a ground running into fuse block? What for?
Not sure
•Crank voltage- hot during crank and run, goes to ignition relay
•stop lamp- goes to brake light switch, hot when brakes are applied
•Starter enable relay control- goes to starter relay
• Battery Positive- straight to battery
• Park, Neutral start switch- hot with ignition
• stop lamp- goes to brake light switch, hot when brakes are applied
Now what I need to know
•fuel pump relay- is this to supply power through relay or to turn relay on?
That is to trigger the relay, the power side (that runs through the relay and out to the pump) is from a fuse in the fuse box.
•Trailer back up lamp? Power from column shifter? Relay between?
Not sure
• Park neutral position switch-?
Uh not 100% sure what side of what we're talking about, but it should get power with key on only
•TCC brake switch-?
Gets a signal to pcm from brake switch
•Cruise control release, I imagine signal from brake pedal? If so how?
Brake pedal
•Ground- why is there a ground running into fuse block? What for?
Not sure
That's what I can add
