No power to the ignition

[SlickAlpinweiss]

Sorry if it's already been asked, search function is running me in circles.

'88 325ic, sat for 15 years. Power to lights, and turn signals.
Nothing to ignition, can't roll windows down.
Where do I start looking? Removed 10lbs. of aftermarket wiring thinking it might've been the issue, no change.

Cables are running from the battery to fuse box, everything looks to be plugged in. Ground's?, location?
What runs power to the ignition/ gauges?
Thank you.

[vpilarrt]

http://wedophones.com/Manuals/BMW/19...g%20Manual.pdf

[101]

Give us a more detailed list about what works / doesn't work at each position of the ignition switch (ACC / RUN / START).

Based on what you've briefly mentioned, I'd guess the electrical portion of the ignition switch might be bad, but it could also be the unloader relay(s), the C101 connector or the wiring itself.

You were super careful when removing the aftermarket wiring so as to not yank at it and disturb any of the other connectors, right? (ask me how I know this).

[SlickAlpinweiss]

Thanks,
Nothing comes on at each position of the key, like the ignition is useless.
I've swapped in ignition switch on my other e30, but it was when I had no power to the start position. Would bad switch= no power in all key positions?
Where would be the location of c101 and underloader relay?
Wiring looks fine, I've done dash swap on the other car, this one is back to stock wiring, no cut wires or loose grounds.

[101]

Hmm ... First things first. Check for power going into the switch. Do you have 12V between the fat (10 gauge) red wire that feeds the ignition switch and ground? That wire is hot at all times.

C101 is the big round connector mounted on the firewall near the fuse block. And the unloader relays (there are two) are in the fuse block. But I'd focus on whether there is power getting to the ignition switch and then if power is coming out of the switch before jumping into anything else.

The wiring schematic that vpilarrt mentions above is invaluable.

[SlickAlpinweiss]

:101
Thank you much.
Tested for power going to the switch which I had, so i was to assume the switch was faulty.
Instead of replacing, I was able to clean off the corrosion and re-use it.
So I now have, power, spark, and crank...
No chance I can bring this dead fuel pump back? Then again, best in the long run to replace it anyway I suppose.