22 replies to this topic

[mini13]

as above....

from someone who has experienced total headlamp faliure at speed from this very instance..... its not fun!

[Cooperman]

I come from an aircraft and motor-sport background where failure modes are very important. Thus I would never use a single relay for a pair of main beams nor would I ever 'double-connect' the earths. A separate fuse for each bulb filament is also important.
Every circuit should have an independant earth connection. I even fit twin electric fuel pumps, each with a separate power supply from a different power source, separate switches, fuses and earths.

[Hegnirst]

I come from an aircraft and motor-sport background where failure modes are very important. Thus I would never use a single relay for a pair of main beams nor would I ever 'double-connect' the earths. A separate fuse for each bulb filament is also important.
Every circuit should have an independant earth connection. I even fit twin electric fuel pumps, each with a separate power supply from a different power source, separate switches, fuses and earths.

so tell me in black and white, exactly what i should do and from where
because im getting a tad confused because theres so opinions on this
i trust you cooperman :)

[Hegnirst]

thankyou everyone for your input, simply amazed by the response!

[tiger99]

Read carefully what mini13, Cooperman and I said. I don't see any different opinions at all. I happen to be a safety expert in a different field, and am quite appalled by things like single point earths for both lamps.

[Hegnirst]

Read carefully what mini13, Cooperman and I said. I don't see any different opinions at all. I happen to be a safety expert in a different field, and am quite appalled by things like single point earths for both lamps.

ok then, different way of explaining things, because do the wires have to be taken out of the plug that goes into the back of the bulb holder and replaced with thicker wires and completely replaced with thicker ones? or cut back a bit from the bulb holder and put thicker ones in, or with a fuse what combination or which one?

thanks

[tiger99]

Yes, you should use thicker wire throughout. You may be able to find bulb holders with thicker wires already fitted. And, as I said, please do ensure that you take the black wire from each headlight directly to its own local earth point, which it can share with the sidelight and indicator on the same side. That will actually need less new wire anyway, so you win on both cost and safety.

[dennismini93]

can you put http://www.ebay.co.u...=item4d091720a5 these in the headlights or are they no better than the standard H4?? or http://www.ebay.co.u...=item415cf087dd

Edited by dennismini93, 27 March 2013 - 11:18 AM.