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Author Topic: Headlights etc  (Read 7047 times)

55starchief

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« Reply #50 on: October 25, 2005, 07:38:42 pm »
If you double the realys it just makes it easier for fault diagnosis also i would fuse after the relays with a smaller fuse than a 30
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FUBAR

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« Reply #51 on: October 25, 2005, 07:39:36 pm »
Quoting: Jamieg285
Why go all the way back to the switch - you have the low/high output that is easy to find under the bonnet - it goes directly to the bulbs. Just splice into those.


Would that not be the full Light power current? is that not too much for the switching current?
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55starchief

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« Reply #52 on: October 25, 2005, 07:40:23 pm »
your only switching the relay so the load would be real small mate
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FUBAR

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« Reply #53 on: October 25, 2005, 07:42:49 pm »
Quoting: 55starchief
your only switching the relay so the load would be real small mate


But if you're using the old Power feed for the headlights?...

I think thats what Jamie was suggesting...
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55starchief

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« Reply #54 on: October 25, 2005, 07:43:34 pm »
i think he maent to use the old power feed to close the relays mate
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FUBAR

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« Reply #55 on: October 25, 2005, 07:45:00 pm »
thats what I'm saying... would that not be too much for the relays using the old power feed for the headlights as the switching current
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Jamieg285

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« Reply #56 on: October 25, 2005, 07:46:12 pm »
Quoting: 55starchief
If you double the realys it just makes it easier for fault diagnosis also i would fuse after the relays with a smaller fuse than a 30


I see, you could go for the relays with intergrated fuses - looks neater.
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55starchief

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« Reply #57 on: October 25, 2005, 07:46:24 pm »
no relays pull very little current as it only closes a contact, its the closed contacts that take the full load
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Jamieg285

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« Reply #58 on: October 25, 2005, 07:48:06 pm »
Quoting: FUBAR
thats what I'm saying... would that not be too much for the relays using the old power feed for the headlights as the switching current


The current is dependant on what you are powering - it's the amount something draws. The lights take a lot of power, so will draw more current. Move the same wire to the relay, and there is a massive drop.

On my kit, you simply unplug the wire from the bulb and plug it straight into the relay loom.
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FUBAR

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« Reply #59 on: October 25, 2005, 07:48:23 pm »
Quoting: Jamieg285
also i would fuse after the relays with a smaller fuse than a 30


What fuse rating would you recommend, bearing in mind with 4 relays each one will be running 2 lights.
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Jamieg285

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« Reply #60 on: October 25, 2005, 07:59:03 pm »
There is a way to calcluate the Amps based on the Voltage(12-14ish) and Wattage of the bulbs.  I can look it up, but G may know it.
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55starchief

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« Reply #61 on: October 25, 2005, 08:04:10 pm »
wattage/voltage= amps

55W/12V=4.5A dim per lamp

60W/12V=5A high per lamp
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Jamieg285

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« Reply #62 on: October 25, 2005, 08:15:51 pm »
Quoting: 55starchief
wattage/voltage= amps

55W/12V=4.5A dim per lamp

60W/12V=5A high per lamp


So would you use 5A fuses, or the next size up?
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55starchief

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« Reply #63 on: October 25, 2005, 08:24:59 pm »
Quoting: Jamieg285
So would you use 5A fuses, or the next size up?


The calculations are per lamp so min 10A per side but would probably go with a 10A for lows and a 15A for highs
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FUBAR

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« Reply #64 on: October 25, 2005, 09:03:35 pm »
Guys, it doesn't matter if the relays themselves are rated for 40A does it?  as the ones on http://www.vehicle-wiring-products.co.uk  are 1/2 the price of the 30A ones

Added up what I need (Including a shedload of excess wiring because you never know when you'll need it!)  total for bits comes to £31 + £44 for the bulbs.  Now just need to find out what the lenses themselves for H4 bulbs cost from US Automotive...
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55starchief

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« Reply #65 on: October 25, 2005, 09:04:43 pm »
I have loads of wire mate, and no relay size doesnt matter as long as you stay higher than 30A hell could be 100A if its cheap
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Jamieg285

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« Reply #66 on: October 25, 2005, 09:09:13 pm »
Quoting: FUBAR
Added up what I need (Including a shedload of excess wiring because you never know when you'll need it!) total for bits comes to £31 + £44 for the bulbs. Now just need to find out what the lenses themselves for H4 bulbs cost from US Automotive...


Did you spot the H4 bulb connectors? Very handy to have.
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FUBAR

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« Reply #67 on: October 25, 2005, 09:10:47 pm »
Quoting: Jamieg285
Did you spot the H4 bulb connectors? Very handy to have.


No I didn't will add now...

Edit:  where are they?  only ones I can see are on here

http://www.vehicle-wiring-products.co.uk/VWPweb2000/lights-1/lights-1.html

Under bulb connectors but it doesn't specify what type of bulb...
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FUBAR

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« Reply #68 on: October 25, 2005, 09:25:47 pm »
Looking at the pin pattern closely I think thats them...
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Jamieg285

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« Reply #69 on: October 25, 2005, 09:25:59 pm »
Quoting: FUBAR
No I didn't will add now...

Edit: where are they? only ones I can see are on here

http://www.vehicle-wiring-products.co.uk/VWPweb2000/lights-1/lights-1.html

Under bulb connectors but it doesn't specify what type of bulb...


Yes it's those - the white/clearish ones with 3 spade connectors.
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FUBAR

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« Reply #70 on: October 25, 2005, 09:35:26 pm »
Quoting: Jamieg285
Yes it's those - the white/clearish ones with 3 spade connectors.


Thanks Jamie, Added 4 to the shopping List, another £5.76
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FUBAR

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« Reply #71 on: October 25, 2005, 09:46:37 pm »
Ok,

Just spoken to US Automotive, the sell the H4 Replacement lenses complete with sidelight thingys, the H4 Bulbs and the correct UK directional Pattern on the lenses... Bonus

Untill he said that they are £39 each! :  although I just remembered I'd get 25% off that  £30 each

Oh and they only had 1 in stock...
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55starchief

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« Reply #72 on: October 25, 2005, 09:48:11 pm »
Quoting: FUBAR
Oh and they only had 1 in stock...


Thats about right for US Automotive
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Jamieg285

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« Reply #73 on: October 25, 2005, 09:48:12 pm »
Is that with or without VAT?

They have a tendency to quote the exclusive price.
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FUBAR

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« Reply #74 on: October 25, 2005, 09:49:32 pm »
I'd imagine Ex VAT

either way its going to be a little wad for the lenses...  don't have to soend the £44 on the bulbs though...
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