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Title: H1 & H4 watts Post by: parrish on March 30, 2018, 03:44:29 PM Next Question, which may answer my burning replay problem! as I have 55W inner and outer
My manual states: H4 outer 40/45W H1 inner 45W Does everyone agree? alternative: Up-rate the relay which is currently 20W to 30W would that do it? Regards Steve Post Script: Just noticed the 2ltr cars have H4 40W & H1 55W Title: Re: H1 & H4 watts Post by: Thotos on March 30, 2018, 04:31:02 PM No, 55W seems right. 40/45W is too low, that was with tungsten filament bulbs with the round base (can't remember what they were called).
Relay will be 20A not 20W. A 20A relay is good for 250W and should only drive the high-beam so should be fine. If the contact is getting hot and burnt, you are drawing too much current. Check to make sure the low beam filaments go off when you put on high beam. If the low beam stays on with high beam, you'll have over 300W so drawing about 27amps. If yo change the relay to 30Amps you are likely to burn the wires or the contacts in the connections. Title: Re: H1 & H4 watts Post by: parrish on March 30, 2018, 04:57:34 PM No, 55W seems right. 40/45W is too low, that was with tungsten filament bulbs with the round base (can't remember what they were called). Relay will be 20A not 20W. A 20A relay is good for 250W and should only drive the high-beam so should be fine. If the contact is getting hot and burnt, you are drawing too much current. Check to make sure the low beam filaments go off when you put on high beam. If the low beam stays on with high beam, you'll have over 300W so drawing about 27amps. If yo change the relay to 30Amps you are likely to burn the wires or the contacts in the connections. Thanks Theo, Yes 20A. I have currently fitted outer twin filament Dip/Full 45/55W beam (with that round base, H4 im sure) and inner single contact 55W so on full beam I have 4 x 55W. I hear what you say about the Dip staying on when the full beam is on, ill have a check later. As my car is a 1600 Haynes manual definitely shows 40/45W outer with 45W inners. The relay cuts in and out only on full beam, hope that is correct. Steve Title: Re: H1 & H4 watts Post by: parrish on March 31, 2018, 09:56:29 AM So this morning I visited an auto electrician to discuss my problem and he has answered a couple of questions.
H4 45/55W are UK spec H1 55W UK spec H4 40/45W (tungsten) Old European H3 45W Old European He fully agrees with you Theo, the Relay problem should not be caused by 45 or 55W currents so something else going on. Im wondering now if the burnt relay pin is an old problem considering the previous owner had 4 x Cibies wired in as well!! So I bought a new relay and ill try that. Title: Re: H1 & H4 watts Post by: parrish on April 02, 2018, 03:57:00 PM New relay working fine, lights working fine seems it might have been the Old original Relay all along.
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