Question about 1995 GMC Sierra C1500

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Im have a 40 watt fuse that blows when i start my truck occasiona

It doesnt happen every time but on occasion when i turn the key to start my truck i blow a 40 watt fuse. today it has happen more than usual. its under the hood in the fuse relay box. i have all power otherwise,radio, gauges,windows,lights,inside and out,etc...its just the ignition

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It could be either the ignition switch,clutch safety switch(if applicacle)or the starter solenoid,I'm including the circuit diagram for you,one of the 2 or three if it's manual trans has short,if the fuse is blowing as soon as you turn the key on(not engaging the starter)it will be in the switch itself or the clutch safety switch.If it happens when you go to engage the starter it's most likely the solenoid.
im have a 40 watt fuse that blows when i start my  - e261d1f.gif

Posted on May 12, 2009

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2007 ford freestar will fuse # 40 in the underhood fuse panel when the key is turned to the run/start position. It would blow before when it was running and cause vehicle not to shift. Had the transmission...


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It will help if you can identify the 40 Amp fuse that is being toasted when the key is turned.

I looked briefly at a fusebox diagram and found 3 circuits protected by a 40 Amp fuse. The Lamp circuit protects several circuits which have smaller rated fuses on each separate wire. The 40 Amp protection seems to be a safeguard if all the smaller circuits are active in total. Turning off the automatic headlights, should reduce power drain.

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a little more info
what year and model and what fuse is blowing what does it control.
with a little more info im sure we can find the short or bad component .
also i need to know when it blows
right when you put it in
or when you turn the key on
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