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Model specific boards => Golf mk4 => Topic started by: gtirobbie on 25 September 2011, 15:44

Title: Hole in firewall?
Post by: gtirobbie on 25 September 2011, 15:44

I'm just in the middle of fitting a boost gauge and I'm having trouble to find the hole for the hose to go through on the firewall, can anyone help guiding me this?

Title: Re: Hole in firewall?
Post by: jamie16v on 25 September 2011, 16:15

have a look under the header tank by the abs unit, share the hole with the main wiring loom.

Title: Re: Hole in firewall?
Post by: daz veedub on 25 September 2011, 16:17

or through the bonnet cable gromit  :undecided:

Title: Re: Hole in firewall?
Post by: jamie16v on 25 September 2011, 16:25

valid point

Title: Re: Hole in firewall?
Post by: Gti_Jamo on 25 September 2011, 16:39

When I fitted one to my Leon (which is basically the same) I used the main loom gromit on the far passenger side of the firewall/bulkhead. I simply pushed a hole through with a screwdriver offset to the centre of the gromit as to not hit any wires. Taped the vacuum pipe to a bit of welding wire than just fed it through into the car.

Title: Re: Hole in firewall?
Post by: gtirobbie on 25 September 2011, 17:44

I've been defeated! After taking half the dashboard apart i Just could not workout how to get the hose through to the gauge so will have to have another attempt at some other point, thanks for the advice anyway

Title: Re: Hole in firewall?
Post by: Wayne on 25 September 2011, 20:21

Use the grommet for the bonnet release cable but make sure you reseal it afterwards.

Title: Re: Hole in firewall?
Post by: gm8 on 25 September 2011, 20:25

i kinda cheated wi mine for simplicity , out through drivers door loom , through wing into bay , there is space , i used a big cable tie to poke it all through.

Title: Re: Hole in firewall?
Post by: Scott D on 25 September 2011, 21:02

as already said grommet for the bonnet release cable is probably the easiest

lift the scuttle panel up slightly on the drivers side and you'll see the grommet then route down into fuse box for wiring to dimmer switch

are some guides about on the t'interweb

Title: Re: Hole in firewall?
Post by: gtirobbie on 25 September 2011, 23:25

Cool cheers for all the advice!

Title: Re: Hole in firewall?
Post by: Big Tone on 26 September 2011, 07:59

Behind glove box  just remember the hidden clip :laugh: