Crazy light issues...

[Rice_slayer]

Every since I did the HCI swap, my lights have been acting strange. First off, my third brake light doesn't light up, but I think the bulbs are burned out, so I'll put the to the side. Second, my signal light on the passenger side goes very fast like I have a dying bulb,but they're all good. Third, my driver side headlight is dim, still has light, but is very dim. Finally, the fog lights are very dim when I put the lights on, but when I turn the switch for them on, they start blinking, but I believe that to be because the relay might be screwed as it ticks in the power distribution box. My dad says a bad ground somewhere, would someone tell me which ground to possibly look at? Thanks in advance to whomever helps!

 

[MustangMatt96GT]

ground... prolly up by the battery box... there are a few grounds that are there. other than that, im not sure where the ground would be for that.

 

[Rice_slayer]

The ground cable that actually bolts to the power dist. box? I that's the only one I haven't checked yet. Checked all ground under hood and all were good, no fuses blown in fuse box or in power box either. I now that relay is done, so I will replace that monday, but I also have DRE(canadian model) so the daytime running light module could also screw it up.