Wiring advice needed

[Kent126]

Hi guys,
    Is there anyone on here who is a wiring guru? I am tidying up my wiring loom as part of my restoration, with the addition of some extra things.

I'm adding an air horn which I know requires a relay, that is fairly straight forward but has anyone installed one? Is the battery and wiring strong enough to cope?

Also has anyone installed new H4 bulb conversions? I know you can get the extension cables but do you need to update  the fuse box or uprate the wiring? I've heard that the H4 type bulbs can burn out the wiring loom.

I don't mind upgrading stuff to cope with modern demands if required.

Any advice or help appreciated.

Tom


Sent from my iPhone using Tapatalk.

[Pete126]

You need to put two relays in, small fuse box or inline fuse for the headlight bulbs and another for the air horns, Plenty on Ebay

[Gadge]

My very first 126 had air horns and they worked no problem the only thing I had against them is that sometimes there was a 1 or 2 second delay from pressing the horn button to them from actually making a noise as the compressor built up with air lol

[Kent126]

Thanks guys. )

Pete, what amp fuse would I need?


Sent from my iPhone using Tapatalk.

[ronb1967]

Use standard 4 pin relay,,,, just look on youtube under HOW TO WIRE A 4 PIN RELAY

Example 1  Bulb is 60 watts
car is 12 volts

so 1 x  60 watts divided by 12 volts = 5 amps   60/12=5

 2 x 60w = 120 w divided by 12 volts = 10 amp

[Kent126]

Ok that makes sense! Thanks! 😀


Sent from my iPhone using Tapatalk.