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Thread: towbar fitting

  
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    rick45's Avatar
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    towbar fitting

    hi all, need help please.
    i have a 2008 model 1700cdti astra design estate and want to fit a towbar a (witter g94q) can anyone please tell me if the fixing holes are predrilled on the chassis or do i have to drill them.
    also can anyone let me have a wiring diagram for the towbar, i have a ryder smart combi relay and a ryder smart 7 bypass that i want to put in the wiring up.
    any help gratefully recieved,
    thanks, rick

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    any piccys would be a great help. thanks again .rick

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    Witter's website does make FULL fitting instructions available before purchase.

    The Astra-G (mk4) has an almost identical floorpan and the holes need to be drilled - the dints are already there.

    You may need CANBUS compatible towing electrics rather than by-pass relays.
    Maintains:- Vectra Design 1.9CDTi
    Drives :- Hyundai Santa Fe


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    i'm about to get a towbar for my 2007 hatchback,i fitted a witter onto my 2001 hatch and vaguely remember the 'dint' in the middle being slightly out,you could confirm this quite easily by putting the 'boot' plate off the towbar in place and looking down the holes,if all the holes line up with the dints theres no problem ! i drilled thro the boot floor with pilot drill then a 13mm drill(the biggest i can fit in my drill) then opened them up with a tungsten grinding bit till the spacers fitted nice and snug into the chassis beneath,hopefully this next one will go the same,im getting the impression the astra can be done with the relays you have and doesn't need a canbus type loom as just been to a local towbar garage(thats all they do) and the guy there knew of the dedicated wiring loom but obviously dont fit them for the price they quoted.hope that helps
    howie

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    You're opening a huge can of worms if you don't use the proper Vauxhall trailer wiring.
    2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
    6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...

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    towbar fitting

    hi, the towbar i shall be getting (witter) for mk5 only has two bolts and they only come up through the bottom not all the way through the chassis, two lengths of angle iron go into the chassis from the end and bolt through the bottom of chassis (bumper off job), your right about wiring need a deicated kit. thanks all. rick

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