Access hole in firewall

[markymark975]

Planning to run some wires from the battery to a toggle switch inside the car. Has anyone had any experience in running wires thru an existing hole in the firewall? If so what is the best way?

I see where a bunch of wires are already run thru but can't get my hand in there to even see if there is room to push 3 wires thru cuz it looks so tight. By the way, it's for an led "Knight rider" scanner light that right now is just connected directly to the battery. I'll post a vid when I get a chance. Looks pretty nice!

[Jackss731]

yes! theres a rubber grommet and theres a pre-existing hole...but it doesnt go all the way through the grommet so you gotta poke the wires through using a hanger or something.

search my DIY LED STRIP INSTALL nvm here ....
follow all the wires



in the middle of the picuture you can see that tiny red dot...thats my wire going through the pre-existing hole. it just has that wire wrap in it so its hard to see


this is from the inside

[markymark975]

Thanks Jack...I'll have to go check that out. Hopefully it's bright and sunny tomorrow. Oh by the way, here is that vid I promised...not too clear..from camera phone.

You Tube

You Tube

[markymark975]

Originally Posted by Jackss731

yes! theres a rubber grommet and theres a pre-existing hole...but it doesnt go all the way through the grommet so you gotta poke the wires through using a hanger or something.

search my DIY LED STRIP INSTALL nvm here ....
follow all the wires



in the middle of the picuture you can see that tiny red dot...thats my wire going through the pre-existing hole. it just has that wire wrap in it so its hard to see


this is from the inside

Pretty tight trying to get my hand under there because of the FSB. Will try to run it from the inside out tomorrow.

[Dragon-88]

Run a coat hanger, thats what I did was pretty easy...

[thestone11]

Originally Posted by markymark975

Thanks Jack...I'll have to go check that out. Hopefully it's bright and sunny tomorrow. Oh by the way, here is that vid I promised...not too clear..from camera phone.

http://www.youtube.com/watch?v=f8mEbxCBg4s

If you add blue color to the light, I am sure you can scare alot of people by pretending you are an undercover cop...

[Jackss731]

yeah definitely a wire hanger helps out!!!!

[MiniPacou]

Originally Posted by Dragon-88
Whats the easiest way to pass the wire through the firewall?

I had a look at the picture above and looked in the engine bay and it seemed like a tight fit. Still at work so wont be able to do the lights until tonight.

Originally Posted by MiniPacou

take a wire hanger and get a straight wire out of it, make sure there's no bumps/knots and poke it through the grommet's hole. take your electric wire on the back end of the hanger wire and tape it real tight with vinyl electrical tape, it'll go through.

[markymark975]

Wow after spending almost 2 hours going back and forth from the engine bay to under the dash, I almost gave up trying to find an access hole. All the existing holes were so packed tightly with wires and on top of that, the rubber gromet were zip tied. I finally found that small wire that Jack mentioned. I was afraid it was going to be tight also, but from the inside, I shoved a bbq stick thru what I later found out was just "black putty" used to seal the hole and wham! It was the best feeling because I was minutes from giving up. Now I've got a rocker switch to control the kitt scanner from the inside. Thanks for all your help.

[JesseBand]

wow, i have been at this for weeks. glad i found these posts.