Rick, what do you mean "run sans ecm"? My truck does have an ABS unit, appears to be wired up...but, I haven't dug deeper to see if they are functional. I would imagine there needs to be a pump motor or something, I don't see one. I haven't slammed the brakes on to find out. Personally, I don't care for ABS. If it is non functional, all the junk in their not working is coming out. I grew up my first car no ABS. I feel I have more control over a vehicle without ABS then with, whether pumping the brake, or steering the tail end with the throttle...etc. ABS in my modern cars have created stopping distances to be extreme. I feel I could have stopped some of my ABS equipped vehicles in a shorter distance had the rubber locked and slid on pavement. I have also found that ABS doesn't, by far, keep you from loosing your steering in a hard stop. Maybe a feature for a woman, new driver, kid, or "non car buff", but, I like my stuff olde school. And I like to have control over the vehicle, not a pulsating module. I have, unlike most drivers, taken vehicles out in empty lots, purposefully put them out of control, to feel how it reacts - oversteer, understeer...etc. Nobody does that. And they all have accidents. Never smashed up a vehicle.
Secondly...this DRAC module...do you think it will run the speedo without the ECM hooked up? I have also heard, inside, there are jumpers. You can swap the jumpers around should you change tires/gear rations. Check this out. http://tbichips.com/?page_id=504
The ECM I have pulled out is marked SERV. No. 1228062 86AMRW K391781649
If the DRAC will run the speedo, and the ECM doesn't do anything...lol where do all those wires plugged into it go? They can't be connected to any sensors they don't exist anymore. I see no point in putting the ECM back in if it's useless. Just extra weight. Lighter = faster. Faster = better.
Going to take me a few days to finish putting the dash back together. I just got busy with other things. My heat (defront) only vents to windshield. All the vacuum lines are there and appear to be hooked up. I imagine the vacuum source to control the pods is not connected and default to defrost. I'm thinking instead of installing a vacuum reservoir just supply the HVAC vacuum pods tee'd off the brake booster. Truck has great heat. Just maybe I would like it to blow out the vents instead of the windshield...As far as A/c...no...compressor is useless weight. Will take that out. Missing condenser and accumulator anyhow. don't need A/C for the toys. Ain't going too far with them on a regular basis...burned up a half tank of gas the other day and didn't go very, very far. But I'll admit...I did push the pedal down a little bit now and then. That carb SUCKS gas down like Miley Cyrus is in control of the venturis. Yet, it's tuned just right. Went through carb, power valves...vacuum...etc...it's set up the way it should be. Does richen up somewhat as one would like when the secondaries open. BTW, I think the cluster I took out was from a '86 Blazer. Like I said....Frankenstein. I want to go through that wiring myself, for my own peace of mind. I may have a rear end for it, friend of mind had called about, with the posi carrier already in it. Convert the rear to disc brakes...new bearings and seals and set of gears...should wake it up. It goes light hell already but I'm still breaking loose at 45mph. My friend wants me to go with a 4-link....I was thinking...caltracs and pulling the overload spring. All in time...Truck makes every other vehicle I drive feel like a wound rubber band is the powerplant.