View Full Version : ignition circuit

02-18-2007, 07:26 PM
My truck isnt getting power to the distributor. To run and tune my engine i have been running a wire from to the battery to the distributor and disconnecting the battery everytime. There must be a loose connection in the column(im assuming) or ive missed something on the wiring. Any ideas or pointed where to look? The starter is getting power but the spark isnt.

According to the manual a wire runs from the ignition switch to the coil then to the disty. Ive got a HEI unit so im assuming thats interpreted as igntion switch to disty(b+) because the coil is in the unit.

Now, ive thought about jsut running a 12g. wire from the battery to a seperate switch on the dash then to the disty and jsut bypassing the whole ignition column system. Any negatives? I know race cars run that. Thanks

02-18-2007, 09:04 PM
could it be a burnt fusible link?

02-19-2007, 07:20 AM
i checked that and didnt notice anyuthing, i'll double check today to make sure.

Any downsides for having a seperate on/off switch?

02-20-2007, 09:53 PM
IT is vary ez to steel your truck just rember a hamer and a flat blad and about 5min and your truck is gon

m j
02-20-2007, 10:54 PM
neutral/clutch safety?

02-21-2007, 07:28 AM
its got a t400, and i fiddled with the lever in park. No difference.

Andrew Goll
02-21-2007, 06:35 PM
it wouldnt even crank if it was a neutral safety switchget out the dvom and start checkin wires for continunity

02-21-2007, 07:29 PM
ha on my 85 blazer it dont mater what gear it in it will start

02-21-2007, 07:48 PM
I'm going to run a 12g wire from the battery to an inline fuse, to a 12v switch to my disty. Simple, theft deterent and works. What rating fuse should i use? Its only for the distributor.

m j
02-21-2007, 11:04 PM
just fix it properly rather then jury rig some mickey mouse crap.
I have spent so many hours ripping out previous owner scary wiring it isn't funny.

02-21-2007, 11:15 PM
[iagree] When I first got my truck it was a wireing nightmare hardly anything worked and almost every wire had been cut or spliced at one time or another had to change harness now everthing works. Are you sure that the fuseable link is ok? I asume that the truck will turn over but will not start what year is your truck?

02-22-2007, 07:18 AM
The truck wont get spark but the starter will crank over. Its an auto if it means anything. And i've had to deal with my share of shitty wiring, im trying to keep the truck bare bones simple.

The truck is an '83 k2500 with a 350.