That counts as a very near miss! Another learning experience.
I have seen some composite vehicles 'double wired' back to the fuse/relay box and thought it might have been overkill. I guess the earlier low volume production glass fibre cars were built to a budget that precluded what might seem to be an expensive luxury, hence after a few years of corrosion indicators that flash inconsistently, pop up headlights that don't (or one does one doesn't) misfires....etc
Could send a copper earth cable from front to back (or in a loop around the chassis) and tap into to that as an earth?
Must read up my book on auto electrics...bus bars etc...
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