What do I do with my Evap System?

[Rick1991]

This is for the 96+ trucks but yours should be similar.

Cool thank you! I may just spend tonight getting my harness completely disconnect from the engine and labeling all the ones I will need still.

 

[hybrid1]

That's the best way to start


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[Rick1991]

That's the best way to start


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Would something like this make a little sense? 'A' being the bottom row and the 'numbers' being left to right?

 

[hybrid1]

Trying to figure out what your needing this for? All this is showing is your computer connection pinouts and their relative routings.

Are we still trying to figure out how power is going inside the cab?


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[Rick1991]

Trying to figure out what your needing this for? All this is showing is your computer connection pinouts and their relative routings.

Are we still trying to figure out how power is going inside the cab?


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Oh ya that's a good point. I have few questions:

How is the power getting in?

Where are my gauges leads?

How can I reconnect my wiper motor?

I took the harness off but still am yet to go through it. I was just trying to find a 91ish year truck.

 

[90W7]

Your putting a carbed LS motor in your 91 right?

Are you wanting to remove the whole 91 harness or something?

As far as the power getting in: look for the harness coming thru the firewall.

As far as the gauge leads.. Are you asking about the wiring to your instrument cluster? If so that's one connector.

With the factory harness your wipers will work fine regardless of the motor swap.



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[hybrid1]

Power will be coming in from your fuse box under the hood, should be a 12g wire at minimum coming through the bulkhead connector and supplies the convenience center with power which then distributes power to where it needs to go.

As far as gauge cluster goes it gets it's power and ground from two sources. One being from the inside fuse box and the other coming from the passenger side firewall with the blower motor wiring. If you don't have that connected then your cluster gets all messed up.

I will look in my manual to verify the things I'm telling you since my memory is fuzzy from being a while since I messed with it.


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[hybrid1]

Also when I pulled my engine harness from the truck I never had to mess with the wiper or cruise control wiring.


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[hybrid1]

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Here is the cluster wiring pinout. This should be the same from 88-98 c/k trucks.


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[Rick1991]

Your putting a carbed LS motor in your 91 right?

Are you wanting to remove the whole 91 harness or something?

As far as the power getting in: look for the harness coming thru the firewall.

As far as the gauge leads.. Are you asking about the wiring to your instrument cluster? If so that's one connector.

With the factory harness your wipers will work fine regardless of the motor swap.



Sent from my throttle body injected galaxy note3

My wiper motor wiring ran through my engine harness, not sure if its different for 88-94 or not..