Back to some piddling. Saturday and Sunday I spent at least 3 hours all told looking over my wiring mess and trying to make heads and tails of the factory stuff. I poured over the factory wiring diagrams AND the EVTM. I found a little notebook to finally WRITE DOWN the what's what and who's who under the hood. After I wrote it down, I started thumbing thru the book and found TWO other pages with the same
written down.
So I have short/long term memory loss I guess. BUT, all 3 say the same things. So at least I am consistent in reading the wiring diagrams, even if I am wrong.
I did find one big boo boo that would have had me cussing more in 30 minutes than Sam Jackson did in all of Pulp Fiction.
The main underhood connector for the engine harness is all mangled up. I bought a repair piece, but the engine side of the connector is not much better. So I bought weather pack connectors and will put this in the fenderwell. When tracing wires I was totally thrown off by the blue/green dot wire for the low oil sender being where the coil + is. Which on one of my note pages I had noted that when I removed the Duraspark and wired the TFI into the Holley C950, the existing coil + was all weather checked and cracked. Since I had swapped to a Canton pan, I didn't need the low oil sender, so I de-pinned it and used that for the coil +. Not the boo boo though. The chassis side of the connector is missing the coil - or tach feed. WTF?
I looked and looked...then thought, I de-pinned and removed a lot of stuff with the TSAD harness...sure enough the green/yellow dots wire I am looking for is in there and cut off. No big deal. I am running aftermarket gauges and will just run a new wire to the tach.
Where the cussing comes in, is if I hadn't found that and just wired the tach of the MSD into the engine side of the harness. No tach signal, no injector firing. So I would have been stumped trying to figure out why that pig won't fire. I'd have dropped the tank, checked the pump, the pump relay, jumpered the pump on and still no squirty because no tach signal. So YAY me.
I also replaced the factory temp sender in the heater rail with a temp switch that comes on at 198 I think. I wired it to trigger my passenger side fan. The holley HP will trigger the driver side. I'll also wire one of these fans to come on with the A/C, if I ever get far enough to actually figure out how to wire the A/C back up, since I removed the TSAD. The sending unit is a bit longer than the Ferd piece and I was worried it would bottom out, but careful measurements with my finger on a piece of shrink wrap, precisely told me it was good!!!
AND I remembered the Nordskog temp gauge acts up and I bought a new sender for it years ago...so I found it and swapped it out. I even soldered in the ignition noise filter with a factory connector! At this rate, if I solder 3 wires a weekend, I can have it running in August.