better is to step back and think about this.
- bad motor
- bad EFI (sensors,fuel pressures low, injector dead, clogged, leaking....)
- bad tune up (oops tune ups)
- Bad starter
- or bad electrical supply.
as soon as he said, LIGHTS.
we know the problem.!!
how did i know that?
well, I know that, because the lights are hardwired to the battery by the most direct path possible ( this is no accident, it's by design, for safety)
so take the voltmeter and find out why the lights are dead.?
WHEN, that is corrected the car will start. ( unless there are 2 problems , but 1 at a time please; we only have 2 hands)
in military training they teach (well, they did)
always check all functions of the system. (before flying off to oblivion)
always compare any failures to the design of the system, to each other (drawings help)
always fix the simple stuff first, if they are related.
bingo , no lights, no power to main fuse box, no power to box, no power to starter solenoid.
see? Dont make it hard, fix the power failure. ( i have 4 pages dedicated to that on my we page. no crank, no start,bad grounds , bad power,just look)
now lets fix it.
best time to fix it is when its broke ( unless you want to inspect all the lighting power path points , gee, i'd already have that done)
troubling shooting is a bummer with a working circuit. truly. a real brain twister ,id not want anyone to experience. Cant fix it if it aint broke. hahahaha
lets say it happens again.
i whip out my trusty $2.99-HarborFright (joke name) voltmeter and jump in to the 60 amp fuse on the finder buse block.
both sides. input and output.
ground to the body metal (black lead) ,red lead probing in 20vdc scale.
lights dim or out. (failed)
expect 12.5 volts at least.
what you do, next depends on what you get.
lets say you read 8v.
bad.
immediately , go to the battery terms (not the out side but the actual center posts of the battery )
12.5v.
you have bad wiring (this means connectors too, as they are part)
this happens in under 2 min. flat.
any time you get low voltage , this is what you do , on all kicks.
you can key on and repeat this at the CIG lighter.
same test , same reactions ,same conclusions..
ask more questions.
glad to help.