Update. Got the fuel pump running using the bypass, but on this particular bike, you do have to use a ground as well. Fuel line popped off the quick disconnect on the inside of the tank.
Update. J&P Cycles sells a Drag Specialties unit to replace it. Waiting on J&P to get back to me on the actual length since they didn't bother to list that info. lol
Actually, I gave you more information than you asked for. Bad habit, but thought it might save some time. I determined the fuel pump had no power because 1: I could run in on ether only, 2: Using a test light indicated no power at any of the 4 wires that plugged into the sending unit/fuel pump housing below the dash. I was told you couldn't check it that way because it's only a second or so it get's power.
At the moment, the bigger issue is why that P&A fuse keeps blowing. I never removed the handle bars nor anything that's on them. So don't know how I could have shorted the switches. But I suppose it's a possibility.
I tried that. I don't have a large rectangular plate, I have a hole about the size of my hand to fit all this in. With the new line, the end that slips on to the fuel filter just reaches the edge of the opening. I can't get the filter, plate AND my hand in there at the same time. I've tried using crooked needle nose pliers but there's just not enough room with it being that short. 2 more inches would have a made a world of difference.
Sorry if I somehow insinuated that the P&A circuit went thru the BCM. The Fuel pump power is however. That's why I was mentioning it.
Just saying from my desk here with no reference books, they're all out at my shop.
If you would look at the wiring diagrams, Like I did, you would clearly see a box labeled BCM on the bottom of one of the diagrams. There is also a label for Fuel Pump Power on what I think is pin F4.
serviceinfo.harley-davidson.com
Yes I do.
Ok, well, that's not exactly how it went down. I had the problem with the OEM ECM. If you read the comments I'd made earlier, the bike started up just fine. I went back a week later, battery was dead. Used a battery charger, not a tender, on trickle charge. Battery and the ECM BOTH got hot. Battery was charged enough it cranked good, but wouldn't start. Bought a battery, put it in and same problem. With the ECM and Battery both getting as hot as they did and now it not starting, I thought I might have cooked the ECM.
I'll try that when I get back this weekend, but the ThunderMax comes with it's own Oxy Sensors. Am I going to have to change those back out for the OEM ones just to try it?
Just tried swapping out the Thundermax ECM/Tuner for the OEM. Same results. Runs just fine on Ether, but fuel pump wont turn on. I can still run power to the pump with a bypass, but doesn't run well that way.
In that case I have to suspect the Thundermax and BCM aren't communicating ! The reasoning behind this is because the Harley security system (BCM) shuts down the fuel system to thwart theft attempts. It's the last line of defense ! ECM and BCM have to be married, they have to recognize each other.
