Hi all, I've run into some electrical trouble with my 78 Z, hoping you can help me. At the fuse block, I get no power at the IGN. (Ignition) port, and power all the time at the ACC. (Accessory) port, no matter what position the key is in. The BAT. port seems to operate correctly, with power when the key is at Run. Oddly, this started with a heater core replacement, which you all know, is about like parting out the car. Untitled by pfz28, on Flickr Well it was only a couple more steps to put in a different dashboard so I did that too. When I got everything back together, the motor would crank, but not start. Very odd, considering that my LS swap has been nothing but reliable since I put it in last summer. Through troubleshooting (and some level of panic), I determined that, since there's no power coming from the IGN port, the engine computer never notices it's supposed to start. Once I give it some power from somewhere, the LS roars to life when the key is twisted. Whew! No problems on the LS front. Starter: Working Headlights: Working Wipers: Working Heater: Working Gauge Lights: Working Power Windows: Not working Gauges: Not working - gauges don't "Wake up" when the key turns on Radio: Not checked - currently removed Courtesy lamps: Not checked - they're all burned out Short version of the story: With the steering column down, I test the ignition switch on top of the column, and get the following results: Big Red Wires: Hot all the time Big Orange Wire: Hot in RUN Big Brown Wire: Hot all the time (Seems odd) Big Pink Wire: Hot in RUN and START Big Purple Wire: Hot in START So ignition switch seems to be okay at first glance, with an oddity at the big brown wire. Testing the fuse block, I get the following results: ACC.: Hot all the time (Seems odd) IGN.: Never hot BAT.: Hot in RUN Fuses: all checked visually, no breaks Trying to think what I might have done during the heater core or dashboard replacement to cause such a weird problem. At first, I thought it would be easy, I'd obviously left something disconnected. Well now it's been a week and I can't find anything. I guess next step is to pull off the fuse block? I don't even know how to start on that. Any help would be appreciated!!