1. The glowplug will last indefinetly without burning out as long as there is a flow of liquid going through it... which there will be.
2. There are 12v glow plugs for Fords that will not get any hotter than 150degrees F. So you don't have to reduce the voltage...

3: Matt, What are the parts called that you used to build this thang? I am ready to put one together tomorrow....
AA

__________________
'87 924S
'81 280SEL

Sold ->

81 300SD -
93 300E w/ 3.2
85 300D-
79 300SD
82 300CD
83 300CD - CA
87 190E 5 spd
87 Porsche 924S

"..I'll take a simple "C" to "G" and feel brand new about it..."