Have a 2002 Gsx1400, when I got it all the indicators and indicator relay & a taillight bulb were blown, no big deal, changed both tail light bulbs to new ones, got new indicators and an indicator relay, the front wiring to the headlight and indicators was all chopped and changed and just messy, housemate who’s an electrical engineer tidied it all up, soldered it up and had it spot on.

Everything was grand, came out to the bike Friday and the dipped beam on the headlight was blown and one of the rear tail light bulbs was blown too.

What do ye think is causing this, any suggestions or ideas, bad earth somewhere I’m assuming?🤔