What the heck is the deal?

[CNH320]

I've recently been fixing the wiring harnesses on my 85 600ES turbo 'vert and being a mechanical engineer, sometimes i get lost when it comes to electrical problems so is there an electrical engineer or electrician that could explain to me why this large cluster of resistors is soldered inline to my temperature gauge sensor on the front of the cylinder head? This is the funniest thing i've ever seen... One large one wasnt enough?!?

http://img259.imageshack.us/my.php?image=img1282pr8.jpg

[charger R/T]

maybe that was the prototype for this
eBay Motors: Dodge Dakota/Daytona Next Level Performance Chip/Module (item 200249867256 end time Sep-06-08 11:05:53 PDT)
Tim