HOW TO: Run wire through firewall from engine bay to interior / cab

[EcoBeastCA]

Because this doesn't seem to be common knowledge:

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[powerboatr]

Once you slit it...it leakes
I use 1/4 inch plastic tube for small wires
Sharpen it like an iv needle. Mske it 5 or 6 inches long
Gently thread it through the harness
Then slide your wire through it.. then afyer wire goes through...pull plastic out and the harness tightens around it

 

[EcoBeastCA]

Once you slit it...it leaves
I use 1/4 inch plastic tube for small wires
Sharpen it like an iv needle. Mske it 5 or 6 inches long
Gently thread it through the harness
Then slide your wire through it.. then afyer wire goes through...pull plastic out and the harness tightens around it

There is no good reason to go through ANY existing harnesses when you could do what I demonstrated in the video.

 

[HammaMan]

2nd easiest, the boot at the brake booster was a cake walk, doesn't require vent pulling and potentially replacing VHB-like adhesive.

 

[EcoBeastCA]

2nd easiest, the boot at the brake booster was a cake walk, doesn't require vent pulling and potentially replacing VHB-like adhesive.

No need to replace that tape. I honestly don't know why it's there in the first place.

 

[Gros Ventre]

How do you take out the "F" plate?

 

[HammaMan]

No need to replace that tape. I honestly don't know why it's there in the first place.

Chafing prevention, lack of material present to use clips in its place.

 

[EcoBeastCA]

How do you take out the "F" plate?

It's held in by four plastic studs that are mushroomed out on the back side. You just need to drill a little on the mushroom until it pops off and the plate comes out the front. To reattach it, you can use some VHB tape or a glue. The whole mushroomed stud attachment method is a bit goofy.

 

[CoolCoyote]

a bit goofy.

That sums up 75% of Ford's manufacturing and design decisions.

 

[EcoBeastCA]

Chafing prevention, lack of material present to use clips in its place.

Chafing on what? The only thing it's touching is the vehicle body, and it has so many clips surrounding the rest of it there is no movement in it whatsoever. Believe me, the tape is not necessary. Even if it were, I would much rather replace $5 in tape than risk damaging critical factory wiring and compromising the boot integrity.

But it's your truck, do what you prefer.

 

[HammaMan]

Chafing on what? The only thing it's touching is the vehicle body, and it has so many clips surrounding the rest of it there is no movement in it whatsoever. Believe me, the tape is not necessary. Even if it were, I would much rather replace $5 in tape than risk damaging critical factory wiring and compromising the boot integrity.

But it's your truck, do what you prefer.

Chafing isn't unique to wires. Ford is really good at cutting everything that'd save them fractions of a penny, nevermind the labor of putting it there in the first place.

 

[VRFlyer]

Nah, I usually grab my ol' trusty pistol, aim, squint, and fire!

Pro Tip: Plug the darn hole with some good o' gum for weatherproofing.



/S

 

[Hobkvet]

They used to call it dum dum tape- The OLD fords used it on weather membrane (plastich sheeting) in door panels- Is that what you're referring to? I'm sure once that hole for the wires is sealed up it shouldn't leak

 

[FirstFord]

2nd easiest, the boot at the brake booster was a cake walk, doesn't require vent pulling and potentially replacing VHB-like adhesive.

Would you care to go into more detail on this? Do you mean there is already a wire grommet in place that I can "piggyback" through, or are you just saying it's the best place to drill a hole and insert a grommet/wire?

With the help of a flashlight, I looked pretty hard at the area you described and saw nothing to piggyback on to, but that area also looked the most feasible for drilling.

I need to run a couple of small gauge wires through the firewall. I appreciate your input.

 

[FirstFord]

Would you care to go into more detail on this? Do you mean there is already a wire grommet in place that I can "piggyback" through, or are you just saying it's the best place to drill a hole and insert a grommet/wire?

With the help of a flashlight, I looked pretty hard at the area you described and saw nothing to piggyback on to, but that area also looked the most feasible for drilling.

I need to run a couple of small gauge wires through the firewall. I appreciate your input

Bumping

@HammaMan , if convenient for you, I would like your input. If there is already an existing path that I can utilize for routing the wire, I would much rather much use that route than drill a new hole and install a grommet. Thanks!

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