300CE dimming dash lights after Euros

[limeyb]

Just installed euro lights. All pins are newly soldered, in correct holes.
Had the car out today for the first time since. After driving around for 10-15 Min's with the lights on the ABS light came on, then the SRS light. Then the car started to rev lower . I switched of the lights revved the engine and the lights went off . I sat in the car for a few Min's with the engine running . Went into my meeting, came out 45 Min's later and the car started OK. Did not use lights on way home. Is it Battery, Alternator, Lights wired wrong

[limeyb]

anybody got any ideas, all the connections are soild.....