Electric fuel pump causing LED flickering

[alolympic]

Hoping for some advice on how to fix a new problem.
I have replaced my sidelight bulbs with LED's. They do a great job, however, they flicker, seemingly in reaction to my electric fuel pump.
Will wiring in resistors eliminate the reaction of the pulses from the fuel pump? Or should I be looking to change to a different type of pump that doesn't pulse (if they exist)?

[DrDeAtH]

Resistors won't sort it. Capacitors will.

[alolympic]

DrDeAtH said:

Resistors won't sort it. Capacitors will.

Great, thanks for that! Having had a quick read about capacitors, that makes sense.
I am now a bit baffled about which type to use, and how to wire them in? Any tips? I am thinking I can just splice them in for each circuit, after the relay, before the bulb?
Many thanks in advance.

[DrDeAtH]

You would need an electrolytic capacitor fitted across the lamp. It will smooth out the fluctuation in the supply. Try starting off with a 10uF 25v size. Make sure the polarity is correct, as it can explode it wrongly fitted.