Technical & General Discussion Area > Tech Torque 1974 to 1978

67 headlights flickering

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GEOFF289:

--- Quote from: Dwayne on November 12, 2020, 09:54:55 am ---Fitting the headlight relays is really easy.

I had no wiring experience and easily fitted the relay in about 30mins.

--- End quote ---

Ditto, one of many things on the "if I can do it, anyone can" list.

fatso1:
Will the attached loom work?

SMH00N:
You need to know what watts the headlights are, to make sure the cable can take the load. This is critical for the power cable as it supplies all the power needed.
55 w low beams will pull 9 amps, 60w high beams a tad more (divide watts by volts; 55/12= 4.5 (or actually 110/12 = 9.16))
So on high beam you are going to need a cable to can cope with 20 amps (working on all 4 lights being on).

That harness looks at a glance to be 3mm wire which tops out at 20amps - in a quality cable. "Yes" it will work but with barely enough redundancy to cover you driving down a dark country road at night.
I went 5mm power wire for my setup and 3mm wire for the light harness. Overbuilt it, won't worry about it again.

If you want to buy something, look at these guys: https://bluewireautomotive.com/products/headlight-relay-booster-power-wiring-harness-kit-40amp-h4

pgold:
What wattage are your headlights? Are they sealed beam or halogen? If you have good lights will you do much night driving?

fatso1:
Sealed beam I have just ordered that look from blue wire I won’t do much night driving but it’s a pain in the arse not too or to have to make sure I’m home before dark for $70 for the relay kit should be well worth it

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