Fitting New (twin) Horns - Almost There But Not Quite.

Discussion in 'Tech/Mech General' started by GeriatricWanderer, May 2, 2015.

  1. GeriatricWanderer

    GeriatricWanderer Funster

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    Now back in Sarfend for a couple of months.
    On a previous van (T4) I replaced the OE horn with a pair of snail horns. With the guidance of someone more electrically skilled than me, I made up a nice little harness with a relay and fuse and everything worked well.

    The T4 has now gone but I kept the new horns and harness to fit onto my latest van.

    All very simple apart from one thing I can't sort out:

    The OE horn on the T4 had a twin feed wire and I simply unplugged the old horn and ran the 2 wires to terminals 85 and 86 on the new horn relay. The OE horn on my current van only has one feed wire so I'm a bit lost as to how to connect it to the relay.

    Do I connect this wire to one of the relay terminals (which one?) and earth the other relay terminal?

    If that makes sense to anyone I'd appreciate some guidance - if not then "trial and error" has always worked for me in the past. :)
     
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  2. andy63

    andy63 Funster

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    If its the standard 4 pin relay I think you would wire the existing horn feed to terminal 86..which will switch the relay on ... 85 been coil ground...
    Then a power supply for the horn to 30 and a connection to horn via 87.
    Ta andy
    P's hope that makes sense :)
     
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  3. Abacist

    Abacist Funster

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    Good question!

    I've bought some air horns but have not yet got around to fitting them!
     
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