Alan ,I have a headlight housing with 2 seperate clear lenses with one LED behind them mounted on a bracket. The light it gives off is poor.
I have removed a plastic lens and bracket on a single headlight and placed the LED ( OEM ) in place of the lens with great results on a different RK ps3.
Not sure what splicing would look like when you say it should be in series. ( limited knowledge on my part ). Sorry 😶
Thanks for the reply.