ok I am sure this has been talk about but i have not found my answer
i have a 1999 astro and i have no low bean headlights. have check the fuses and replace bulbs and replaced the diode behind the drivers seat and still nothing. the high beams and every thing else works. it seems to me there are 3 major parts, the dido behind the seat the dlr mod and the dlr relay the last two I can not seem to find. I am frustrated over this.
first I need to locate them and is there any test process step by step to follow