Originally Posted by Brendan Hughes
I'd heard of that being done as a one-off. Why do you say "often"? Sounds like a common and perhaps legal mod? Which suggests that either the original truck horns were crap (like scoobs), and/or that it's no big deal?
Need air compressors, don't they? So fitting one to a car would be a pig...
Some guy's who we used to go rallying with had a pair of train horns on their VW LT35 service barge
, They used to drain a fairly hefty air reservoir with a couple of good blasts
Running a compressor on a car is not that difficult, you can use a modified A/C compressor, the biggest PITA is siting a decent reservoir
