The plug for my main engine wiring harness to the ECU is pretty big, around 150mm long and 50mm wide and I need to bring this through the firewall so I can mount the ECU in the cabin. Problem is that the plug is too big to push through a rubber grommet that will still seal on the wiring harness that will only be around 25mm in diameter. Ive been to pick- a- part and looked at all sorts of grommets but nothing fits the bill. Normally you would de-pin the plug, push the harness through the grommet then re-pin the plug but I don't want to do this as I have 88 pins which are very small and I don't want to damage the plug or pins in the process.
I have found this on the internet http://www.sealsit.com/grommet_split.asp which would do the job but its $30 plus freight from the US. The alternative would be to use a grommet of the right size (50mm OD x 25mm ID), split it on one side and then glue it together with something after putting it over the harness. Not sure how well this would work and what sort of adhesive to use?
Any suggestions appreciated.
Also where to buy grommets rather than spending hours rooting through smashed cars?
Cheers.
David