I have read many posts regarding no-starting conditions, unfortunately, I have not seen suggestions for my current issue. Following is a description of events:
1. I pre-heated the C-12, retracted all slides, unplugged the coach and was ready to leave Breckenridge, CO.
2. Turned on the ignition, low air pressure sounded as normal, there was very little cracking power, seemed like low battery condition. Which was a mystery since the coach was pulled in for weeks and the inverter indicated 100% battery charge.
3. I switched the chassis and house battery switch on and off, power then showed on the dash volt meter when the key was turned. However, once I turned the key to start, low cranking was still and issue and the voltage meter on the dash gauge showed no or only 10-volts once again.
4. After several attempts of turning the chassis and house batteries on and off again, I was able to turn the engine over.
5. On the drive back to Michigan, I started and stopped the coach four times at fuel stops, the engine started up just fine.
6. After arriving home the next day I tried to start the coach, again the low cranking issue / low dash voltage condition returned. This time, I used the boost switch and the coach started. Therefore, seemed a new solenoid was needed.
7. The following day when the key was turned to start position I heard clicking sounds from the front bay. Therefore, assured me that a new solenoid was in need.
8. Today, I picked up a new solenoid and installed it (took a picture prior to removing to make sure wires were connected correctly). Once completed, there is now no-power to the dash or low pressure alarm when the key is turned to start position.
9. So, I put the old solenoid back in, same issue no power. I did turn off both the chassis and house battery switch prior to removing, installing, and re-installing the solenoids. So, I don't think I blew a fuse.
10. Volt meter check indicates there is 14.6 on the main power cable running to the solenoid, so battery charge level not does appear to be the issue.
11. When turning the key to the left for accessory mode the radio and Aladdin power up. However when turning the key to the right, there is a noticeable dim to the overhead lights, and it seems that there is a relay underway the dash coming on. The accessory mode will not work until after a few minutes go by. Hence the reason I suspect there is a circuit breaker style fuse under the dash that is tripping.
12. With the ignition switch on accessory mode, the Aladdin does not show any engine data (which it normally shows engine and trans temperature).
I'm stumped as to why there was intermediate power the dash prior to installing a new solenoid. And now, no-power on the ignition mode after installing a new solenoid and then again after re-installing the old solenoid. I am now wondering if the ignition switch could be the issue? If so, I believe I have read in the posts that it is a GM ignition switch available at auto parts stores.
Your thoughts and expertise would be very helpful, I need to get the coach winterized and into the barn for the winter.
Randy