Posted by Alex Billson on January 19, 1998 at 16:53:02
In Reply to: Horn Relay
posted by Paul Reasenberg on January 19, 1998 at 15:22:42
Paul, I am not a purist just for the sake of it but I hope I'm a little practical. My car had a little modern crud on her when I bought her and I pulled a relay out of the horn circuit for the following reasons: 1. Henry generally knew bloody well what he was doing and the original system worked/works for a lota people. 2. The system works fine if you take out the light switch assembly at the bottom of the steering column by unclipping the lighting switch and cleaning the gunge off the central wire Consider putting a modified steering box end plate (that is one with 6" of tube) on the steering box if one is not already fitted as this will protect yout light switch too. 3.You not only have to mount the relay but when you do you introduce a whole new set of contacts and its coil to go wrong. Remember the acronymKISS standing for Keep It Simple Stupid. (not an insult just good advice generally). 4. If your wiring is affecting the horn that badly it probably should be the primary cause of your attention. Have you got a really good earth from the battery to the frame? Remember the steering box has to have an earth return back to the battery. Paying attention to a good battery earth might improve your lights as well as starting too! Disconect the battery and beg or borrow an ohm meter and measure each of your wires to find the culprit. Be sure to measure resistance from the steering column wire to earth with the button pushed down. It should be just about a short circuit. Generally the horn wire in the steering column either works, blows the horn all the time (or intermittently), or doesn't allow the horn to work at all. A relay can help patch up a high resistance wire here but I wouldn't have one, I'd replace the wire.
Alex
: Paul |