What is your question?
My van was having starting issues where the power wasn't coming correctly to the relay and my repair person thought that there was either some electrical problem or a problem with the computer. I was able to start the van by shorting out contact number 30 to contact number 87.
Rather than try and debug all of the electrical problems I decided I would rig a switch to connect those two contacts and fire the starter solenoid.
I added an appropriately sized correctly fused switch, and while I was doing that I added a switch to control the cigar lighter because I have a camera connected to it.
Both switches work. However the first time I went to start the van I turned the key to the on position, and press my starter switch, The engine turned over fine but never caught. The instrument cluster wasn't turning on anymore, and other than the stuff in my title nothing else was turning on.
I have checked all the fuses I can think of, I have not checked the fusible links. Help?
How long has your 2003 GMC Savana 3500 had this problem?
A few hours
Dude. I've been starting this van with a paperclip in the aforementioned relay sockets for the past week. It ran completely fine. I have 300 Ah of LiFePO4's in the back of this van, with myriad charging (engine, solar, 110VAC) and discharging circuits. Adding a *correctly sized and fused* instantaneous switch, with oversized, marine-grade wire, is like the least dangerous thing I have done in the van. The switch does its thing, but I erred somewhere when I was snipping and cutting. "Restoring it to factory" is simply removing the spades from the socket and plopping the relay in place. I appreciate you taking the time, and it's good for me to see that I'm not really in the target market for this forum so that I don't waste my (or y'all's) time. I'm not particularly interested in being shoved towards an in-person visit, but I am very willing to pay for ideas or advice from people who understand that this is an interesting process for me, and aren't dismissive of that. Thanks again!