Check your alternator/brushes/charging system. Last time I experienced that (91 300E) xmas tree was about 1 miles before the car died as a result of the brushes. If I recall correctly, there is a circuit that uses the continuity through the brushes, and if those open you get no warning?.....those in the know please help here. Hope it helps.
91 300E 190K
81 911SC 210K
61 MB 190C 90K - sold...sigh.
70 914-6 - DUI victim - sigh
911T - Fire victim
Renault Dauphine '62
67/Cougar GT;70 Challenger 440 Mag
www.wetstart.com - OEM future option coming soon