a safe, convenient place to drill a hole in the firewall

a safe, convenient place to drill a hole in the firewall

Postby JayDubya [OP] » July 22nd 2010, 2:22am

I don't know if this has been covered, but since I located a good spot to run a wire or cable, here it is. Looking under the dash, I saw an area of the firewall right above the wire tray where there was no insulation (a round, half inch diameter area of bare metal), so I drilled a one-eighth inch hole in the center of it and pushed a wire through. It came out under the hood in a nice, roomy, bare area right behind the battery;
Here is the underhood shot with the battery out:

Image


Here is the underdash shot with a #4 cable run through the enlarged hole (circled in red):

Image

The cable was in a perfect spot to run right into the wire tray to the left of the driver's seat.


Here is the finished, fused install:

Image


If this should be in another forum section, feel free to move it.
'99 Astro Mark III conversion hack job
Original Poster [OP]
JayDubya
Fueling (3/4 tank)
Fueling (3/4 tank)
Years of Membership: JayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full years
Posts: 81
Topics: 11
Joined: April 2010
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: RWD Hightop conv

Re: a safe, convenient place to drill a hole in the firewall

Postby rev_les » July 22nd 2010, 2:33am

You might want to put some zinc primer on that hole to keep it from rusting, then put a grommet in it, to keep it from wearing through the insulation on your cable. :2:
Figure out the problem before buying parts
NRA Lifetime Member
2'nd amendment supporter
'13 Jeep Patriot
'01 Safari 150K 4.3 "W" 3.42's
'87 Monte Carlo SS
'79 Avco 32' RV
User avatar
rev_les
Site Contributor
Site Contributor
Firing on 2 Cylinders (L3)
Firing on 2 Cylinders (L3)
Years of Membership: rev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full yearsrev_les has been a member for 11 full years
Posts: 2235
Topics: 39
Joined: February 2009
Location: Pinehurst TX
Gender: Male
Alias (AKA): Les
Van Make/Model: Chevrolet Astro
Extra Info: LS 4.3 RWD

Re: a safe, convenient place to drill a hole in the firewall

Postby Leeann_93 » July 22nd 2010, 10:20pm

rev_les wrote:You might want to put some zinc primer on that hole to keep it from rusting, then put a grommet in it, to keep it from wearing through the insulation on your cable. :2:


:goodpost:


But great job :)
'05 Astro AWD vin X
'02 Astro LS AWD vin X
'00 Astro LS AWD - WIP
'99 Safari XLE AWD - broke
'93 AWD EXT vin W - real broke
User avatar
Leeann_93
Team Leader
Team Leader
Firing on 8 Cylinders (L7)
Firing on 8 Cylinders (L7)
Years of Membership: Leeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full yearsLeeann_93 has been a member for 11 full years
Posts: 13488
Topics: 44
Images: 17
Joined: December 2008
Location: MD
Gender: Female
Alias (AKA):
Van Model Year: 2005
Van Make/Model: Chevrolet Astro
Extra Info: LS AWD

Re: a safe, convenient place to drill a hole in the firewall

Postby JaxSPL » July 22nd 2010, 11:24pm

yea you really really need to put a grommet of some kind in that hole. I've seen too many vehicles burn down due to lack of a simple grommet.

Now if I could get 4/0 run properly through that area, hehehe.
"Installer's Nightmare" has officially come to life. Only 1 sub, but loud and clear.
Subwoofer enclosure designer. PM For More Info
User avatar
JaxSPL
Firing on 8 Cylinders (L1)
Firing on 8 Cylinders (L1)
Years of Membership: JaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full years
Posts: 837
Topics: 45
Images: 9
Joined: October 2009
Location: Jacksonville, Florida
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: 4.3L V6 SPL

Re: a safe, convenient place to drill a hole in the firewall

Postby JayDubya [OP] » July 23rd 2010, 5:32am

There is a grommet around the wire; I just didn't get a pic of it. Several pics I snapped were so bad that they weren't helpful at all, so I ditched'em. I even deburred the hole. I had tears in my eyes at the beautiousness of the job afterward. The only reason for the post here was to show the "area of free drilling", so to speak.
'99 Astro Mark III conversion hack job
Original Poster [OP]
JayDubya
Fueling (3/4 tank)
Fueling (3/4 tank)
Years of Membership: JayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full yearsJayDubya has been a member for 10 full years
Posts: 81
Topics: 11
Joined: April 2010
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: RWD Hightop conv

Re: a safe, convenient place to drill a hole in the firewall

Postby JaxSPL » July 23rd 2010, 2:34pm

Good info and thanks for posting it. I should have said that in my earlier post instead of going off about the grommet. That's one of my pet peeves though.

"area for free drilling" = sure ain't the gulf of mexico.. Sorry, for some reason I couldn't resist that.

I think I am going to see just how big of wire can fit in that area. I'm getting tired of my cable running under the van. I have to keep fixing the mounting tabs and such so the cable doesn't fall down. Doing it this way would let me get the cable into the van and probably down by the step for the doors. hmmm.. Ideas a brewing again.
"Installer's Nightmare" has officially come to life. Only 1 sub, but loud and clear.
Subwoofer enclosure designer. PM For More Info
User avatar
JaxSPL
Firing on 8 Cylinders (L1)
Firing on 8 Cylinders (L1)
Years of Membership: JaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full yearsJaxSPL has been a member for 11 full years
Posts: 837
Topics: 45
Images: 9
Joined: October 2009
Location: Jacksonville, Florida
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: 4.3L V6 SPL


 
  • Related topics
    Replies
    Views
    Last post

Return to Electrical

It is currently October 21st 2020, 2:28am

Electrical Forum
ElectricalDiscussion specific to electric components of vans. Category for alternators or batteries, starters and ignition parts, anything 12v and electrical issue like fuses, circuitry, wire, terminals, switches, connectors, bulbs, relays, and wiring. Voltage and amperage diagnosis.
To create a new topic in Electrical, click this button:
Previous topic Next topic
Recent Image Attachments
Attached by:
nwisehart
in Electrical
Views: 20
Comments: 1
Date: Today
Time: 12:44am
» Read last comment
Attached by:
Olivier02
in Electrical
Views: 101
Comments: 3
Date: Oct 11 '20
Time: 8:34pm
» Read last comment
Attached by:
Attached by: Leeann_93
Leeann_93
in Electrical
Views: 151
Comments: 4
Date: Oct 10 '20
Time: 5:08pm
» Read last comment
Attached by:
Attached by: Leeann_93
Leeann_93
in Electrical
Views: 151
Comments: 4
Date: Oct 10 '20
Time: 4:52pm
» Read last comment
Attached by:
Maddog
in Electrical
Views: 191
Comments: 10
Date: Oct 09 '20
Time: 4:08pm
» Read last comment
Sponsors

Who is online

Users browsing this forum: No registered users and 8 guests