Holes in Firewall

[bigge31566]

I have three holes in firewall next to wiper motor and brake booster, trying to figure what goes thru them, I know the top one to the left is for the speedometer cable, but there are two other that are stacked on top of each other, any ideas, Drawing need to rotate to right sorry

 

[smoothandlow84]

Wiring harness is one of the other two holes. The third....doesn't look like factory.

 

[bigge31566]

Im installing a wiring kit and will be using the holes if they arent percifically for anything

 

[chengny]

Here is yours side by side with a stock firewall - note the sealant over the punchouts on mine:

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I am going to say speedometer cable, cruise control vacuum line to the brake override switch and...that's all I got.

 

[MadOgre]

I know my diesel has more grommets then the gas

 

[bigge31566]

thanks ill probably use both of those to run new systm since I dont have cruise

 

[HotRodPC]

How have you flew under the radar and gotten by without posting pics of your truck Ervin? Seems you just post up in a tech section and act as if you've been here forever. No Intro thread, no build thread... Now you're caught !!! Let's see what you're working on. I see lots of threads started, so you're obviously working on it. How about a build thread in the under construction section?

 

[ScottyB]

How have you flew under the radar and gotten by without posting pics of your truck Ervin? Seems you just post up in a tech section and act as if you've been here forever. No Intro thread, no build thread... Now you're caught !!! Let's see what you're working on. I see lots of threads started, so you're obviously working on it. How about a build thread in the under construction section?

Mods were slacking and so bad habits were encouraged.

 

[MadOgre]

I have three holes in firewall next to wiper motor and brake booster, trying to figure what goes thru them, I know the top one to the left is for the speedometer cable, but there are two other that are stacked on top of each other, any ideas, Drawing need to rotate to right sorry

My 6.2 diesel has the 3 holes in the firewall in the exact same location as yours. Don't know if it has to do with it being a diesel or if its because it came with the full trim level ?