Yes it does have a sense wire, mines right at the battery essentially. The Crane ignition (analog, NASCAR version) I have with matching coil paperwork mentions that it will perform down below 8 volts, which was the driving factor in my using it in this 54 year old van, with the crappy charging at idle etc using the old style alternators. I tried a GM HEI conversion way back when I had a slant six in it and it wouldn’t start at times let alone run at idle due to the old everything electrical, low voltage and excessive draw etc. so I went back to the Chrysler electronic ignition and had no issues other than pathetic idle and low speed charging. But since doing the stroker, drag racing etc using the Crane ive had no issues. But I’ve added fans and actually reverted back to a mechanical water pump from an electric Moroso as the charging system couldn’t handle it all. I have no wipers or heat components in it but if I ever reinstall I’m confident what I have now will handle it. But it’s only day one so time will tell.....