Originally Posted by cougar

"However, any drop in voltage anywhere along the feed will cause a problem".

So the problem is not on the ground side, but the hot side.

Originally Posted by mhuppertz

The PCM is throwing this code: 12, 33, 46
12 is normal
33 is because I bypassed the PCM for the A/C
46 is low voltage???
I haven't connected the fluke meter yet, but what I thought was over voltage is being reported as low voltage.

Annoying.

Originally Posted by cougar

Hum, I'm seeing a pattern here.

Originally Posted by j_martin

Naw, they are pretty reliable. I suspect you have a problem with a connection or switch (relay) somewhere.

I started to compose a lengthy help text when I realized you actually haven't told us what is happening, other than things are blinking and you are going nuts.

Is it going over-voltage and burning out lights?
Is the voltage going low, ie lights dimming?
What was the PCM code thrown?

It ain't rocket science, but nobody here (I don't think anyway) is clairvoyant.

With some detailed information, actual observation sans feelings, I might be able to propose a diagnostic path to the solution.