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I had Ecode Cibies and Hellas on my 81 245, now on my 745 and 744. The 745 has the relays to deliver higher voltage to the lamps. I have used 55/60 H4's and 80/100 H4's. Recently added H1 ecodes for high beams.
Just subbing the H4's to the low beam lamps makes a big difference. The lights are brighter and cover a much wider area with even illumination. Really are fine for bad weather as they are brighter but have a good cutoff to decrease glare.
I had some hints of problems (smelled hot wires) when I had the 80/100 bulbs and was on high beam. I was using about 150 watts (100 of H4 plus 50 of standard hi beam), which was stressing the wiring. SO I put in relays, then got some H1 high beams, I think they are 55watts. The amount of light on high beam is more than enough. I can see the road a half mile away.
So the order of diminishing returns is
1- H4's in low beams
2- relays
3-H1 high beams
4=80/100 H4 bulbs
3 and 4 could switch if you need more low beam power, but a problem I have is that the increased voltage is dramatically shortenning the life of the 80/100 bulbs, so altough I prefer them for their low beam power, I am using 55/60 H4's now.
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744 & 745 16v 4+OD, 245 SE auto, 242Ti 4+OD, 245DL auto parts car
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