Hole in firewall...?

[Bullitt74]

Dumb question - Anyone know what this open hole is for in the firewall?

[daveford72]

For your speedometer cable.

[Bullitt74]

Hmm, my speedo cable comes through another hole just to the right of that one:



Looks like it has a fairly robust grommet as well, so not sure if I can move it without damaging the grommet.

Thoughts?

[DuckRyder]

My speedometer cable comes through your open one. Has a foam gasket much like the one on the heater cable...

[Bullitt74]

I wonder if my body man routed the speedo cable through the wrong hole? Seems like more of a straight shot to the cluster to route it through the hole that is open. If that is the case, I wonder what is meant to route through the hole that my speedo cable currently goes through?

[DuckRyder]

I’m having trouble locating the one your speedo cable goes through.... picture from firewall side?

[Bullitt74]

Sorry - the second pic was from inside the cab,

[Ranchero50]

I wonder if my body man routed the speedo cable through the wrong hole? Seems like more of a straight shot to the cluster to route it through the hole that is open. If that is the case, I wonder what is meant to route through the hole that my speedo cable currently goes through?

I'd lay money that's where the heater temp cable comes through.

[DuckRyder]

Heater cable goes through over the passenger side valve cover. 2 Wiring harnesses over the driver side valve cover speedo cable over booster in the vacant hole in the first picture. Another wiring harness over the near the hood hinge.

[Bullitt74]

Thanks Robert! Going to rejig these around a bit. Sounds like I didn’t need to drill a hole in my firewall earlier for some add ons...

[DuckRyder]

See if this helps:





Pardon the filth, gotta clean it up...

[Bullitt74]

this is perfect - thanks Robert!!