Help ID these? Volt booster & ??

[Squid4life]

Sorry, been out of Buicks for about 5 years, going through a tub of parts since I finally grabbed another GN. The smaller one with the LED & button I believe is a Bob Bailey volt booster, right? What about the other? Looks like it goes inline of the TPS or MAF, and looks like the gray plug is for an IAT.

Thank you in advance.