My '90 XJ has an under-hood light on a retracting tether built in to the hood. The light itself has a magnetic base. I thought it was pretty cool, but it's not very bright and the spring that winds it is useless.
Re: Jeep Engine Specs - 4.0 LITER, OHV, 12-VALVE SMPI POWER TECH I-6
I'm actually working on a reference site right now. I'll put a high res picture of my 1990's engine compartment here when I get it online.
Where are you missing lines?