Fuse sizes?

[pk1was]

Could somebody tell me if

1. The horn and brake lights are on the same fuse

And

2. What size should the fuse be

RHD british bus


Wozza

 

[Doomers]

heres the ratwell fuse information link

http://www.ratwell.com/technical/Fuses.html" onclick="window.open(this.href);return false;

looks like its an 8 amp fuse.

Hope this helps

 

[jimthebin]

might help don't know if this means a white fuse ?

[urlhttp://www.thesamba.com/vw/archives/info/wiring/baybus_70a.jpg][/url]

good luck

 

[Doomers]

yes white fuses are 8 amp

Red fuses are 16 amps

 

[pk1was]

Thanks for the info

I have a strange fault. I have an intermittent blowing fuse. The stereo which is an original stereo has been put on this circuit also.

It can last days or minutes, i dont have the stereo on a lot so i have counted that out, however i can press the horn and the brake pedal individually and together with no problem, then someone will say your brake lights are out and a fuse is blown, replace it and go again ?.?

Anyone any pointers?

Wozza

 

[jimthebin]

i know it is very simple of me but i always look for a bad earth as that often seems to be the case so i would start there :msn4:

 

[pk1was]

Cheers jim the bin, im going to have a look tomorrow, im starting with th rear light clusters, as my left indicator has started flashing fast also, so im presuming thats an earth problem too

 

[jimthebin]

fast fashing good simple bad earth sign get the wire wool out !!! and then enjoy a drive !!

 

[Doomers]

I would agree with the above.

Most likely an earth fault. (Im an avionics technician by trade).

I would suggest tracing all wires. As the fault is intermitent then a good likely hood of a wire shorting to the chasis somewhere (posibly chaffed through and making contactvia vibration or movement).


As the fuse is blowing then the short will be between the fuse box and the horn/breaklights

How long is it between fuse blowings?

another option would be to put an temporary inline fuse in either the horn circuit or the brake light circuit , use a fuse with a vaule slightly less than the main fues (ie 5 amp). then if this blows you know which side of the circuit it is on. (halves the problem)

 

[pk1was]

Doomers, it really is a random fault i cant put a time on it, like i say its random. I was going to look at it today but its hammering down, i might do what you say and seperate the circuits to halve the problem

 

[Doomers]

Id definatley spend some time and thouroughly check the wires over (reduce the Fire risk). you best paying attention to where wire contact metal surfaces, going through body work (lightning holes) or arears where contacts are close together. Another good idea is have someone hold the break light on, while you wiggle the wires. Ingress of water into any of the connections can also cause the fuse to blow). The horn connections are exposed below the vehichle (recently had to scrape the rust of mine to get the horn to work). if you get stumped just pm me.