Technical Tips > Pre 84

78 H4 LED swap

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Scott:
^^ This plus a decent wiring harness and relays will give you what you want.  LED's are great for spread, but not distance.

sirfixalot:
I fitted a set of  H4 holden replacement  lights had to enlarge  the hole in diecast  for the rubber boot to fit from memory also fitted relays for high & low beams. Also ran a wire from relays to R/hand headlight in parallel with existing to double the cross sectional area of wire . Bit of fiddling but can be done

sabre:
Do the wiring and relay upgrade before anything else. LED or halogen are usually higher wattage (standard is 60W, halogen common size is 100W and off road LED 180W). Any upgrade in globes will overload you light and dip switch. I prefer HID but they're not practical for C3.

sabre:
You're likely to find relays will give you the results you want without the expense of 4 H4 compatible reflectors. Expect to pay $50+ each plus globes.

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