How to get my ambient surround to work?

[Richard6090]

Hi, I have a Ford Fiesta mk8. I brought some ambient surrounds 3 for my car expecting they may work as on the website it states it only works on the st fiesta. I wired the positive and negative direct to the battery as stated, I then wired the indicator cable to the right and left indicators and a drl cable to the back of one headlight. I tried them with the engine off and they worked great. I started the engine and the sequential indicators don’t work they glitch out with different colours and just don’t work. However the drl comes on fine. With the engine off the battery voltage is 12.6 and with the engine on it is 14.7. From what I can figure out the voltage of indicator is 11.3 with engine on or off. I tried to put a resistor in which was a 3ohm 50w 5A resistor and they still don’t work but they work a bit better. Can anyone help me? Thanks in advance