Electrical draw with key off

[90W7]

Another quick thing to try I's to unhook the alternator and observe the amp draw.

 

[aarolar]

Another quick thing to try I's to unhook the alternator and observe the amp draw.

Describe to me how exactly to do this?

 

[90W7]

Just take off the cable on the back of the alternator and the connector for the hell of it.

A shorted diod in the alternator could be another source of a parasitic draw. (just an idea)

If your DRL's quit working and the battery problem started at the same time I'd make sure that relay isn't bad.

 

[aarolar]

So I found the DRL relay it's the big one on the right and it clicks on and off as I work the parking brake pedal up and down so the DRL relay is good and so is the fuse now how come the DRL don't come on. I think this is the answer to my riddle.

 

[90W7]

If you depress the park brake pedal that turns off your daytime running lights and if you do that does your draw change at all? We're gonna fix this thing!

 

[90W7]

That relay that caused the draw on the vehicle I fixed a while ago clicked aswell so let's not rule it out yet

 

[someotherguy]

DRL diode can go bad and I do believe it is powered with key off; haven't studied the circuit whatsoever but a friend that I trust had advised me to not swap the diode with the battery connected as you can damage the new diode. Anyway it's the heat-sinked device behind the dash roughly above the area of the driver's side of the transmission hump. Try disconnecting the battery, then disconnect the diode. Hook battery up and see what your results are.

If this doesn't affect anything...do you have a trailer brake controller? Try disconnecting it. I've seen them go bad and draw power when they shouldn't.

Richard

 

[aarolar]

DRL diode can go bad and I do believe it is powered with key off; haven't studied the circuit whatsoever but a friend that I trust had advised me to not swap the diode with the battery connected as you can damage the new diode. Anyway it's the heat-sinked device behind the dash roughly above the area of the driver's side of the transmission hump. Try disconnecting the battery, then disconnect the diode. Hook battery up and see what your results are.

If this doesn't affect anything...do you have a trailer brake controller? Try disconnecting it. I've seen them go bad and draw power when they shouldn't.

Richard

Will do tomorrow and I do have a brake controller but I should have disconnected it when I pulled the aux fuse under the hood.

 

[aarolar]

Battery checked good on load tester didn't get to check the diode today got home late. I pulled that DRL relay and it didn't change the amp draw.

 

[unclegrandpa5144]

Ttry this. Disconnect negitive from battery. Put a test light between neg cable and neg post if light goes on u got a short somewhere .