Jesse says that he must watch Wake Up, San Francisco because he and Becky have a code. One wink for yes to a date or two winks for no. Then when Becky gives him the signal she winks twice and he says that it was for yes.
Jesse pulls the TV over to watch Wake Up San Francisco. You can clearly see that it's not plugged, and you can also see that Jesse doesn't make an attempt to plug it in before turning on the TV.
When Jesse is going to watch Becky on TV, he says she will
wink once for yes to a date with him and twice if the answer is no. During her broadcast, she winks twice, he jumps up and exclaims, "Hot dog, Joseph, a double wink! Chill the champagne pal!" The double wink would have indicated no date and, therefore, he should not have been happy.