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Why do I keep blowing Headlights Blown 4 seal beam headlights and haven't got out of the shed yet ??????

Is that with the engine running ???

theyre shit. and you need a loom with relays in it.

Blacky No just testing in the shed I'am wondering weather it's a bad earth

https://www.aliexpress.com/item/4001238 ... mainSearch

its 15 bucks but you might want to get vaccinated first...

gpi wrote: Sun Jan 23, 2022 8:31 pm https://www.aliexpress.com/item/4001238 ... mainSearch

its 15 bucks but you might want to get vaccinated first...

Don't under stand this one gpi

buy it

$*#@ sake

gpi all i see is ads for cloths and stuff ???

ive got a spare one ill send you via pm.

everyone else just buy a h4 relay, theyre 15 bucks and they save your car melting...

7'' H4 Headlight 2 Headlamp Relay Wiring Harness Car Light Bulb Socket Plug For Car Auto Headlight

check you are wired up correctly for headlight type

this is a fallacy much like big pharma is instructing groupthink.

If he is blowing sealed beam headlights, a relay is likely to be of little help. All the relay does is reduce the current in the switching wires, and allow HIGHER current to the headlight. If his wiring was not able to handle the headlight draw, either:
a) the wiring would get hot and melt/catch fire, or
b) the bulbs would be very, very dim.
Neither of these tend to blow sealed beams. They are quite tolerant of under-voltage.

Is the factory wiring still standard, and connected correctly?
What wattage bulbs are you using?

I had a O/T Toyota at one stage that would routinely blow bulbs. I had upped the bulbs to high wattage. Wiring was fine, just the bulbs blew. Turns out Toyota wired them so that both high beam and low beam stay on when you are on high beam. All those amps from the bigger bulbs going down the single earth pin used to melt the earth pin out of the bulb.

Cheers,
Harv

Hi Harv
I have after market harness ( Electrician wired up ) and running 50/75 seal beam

There are plenty of electricians on this group who know more than me but.... there's only one normal way to blow bulbs and that's over voltage; Unless you are dragging huge amps through them to feed something else....