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Electrical problems. Why ?! Why always electrical problems ?!!!

yello80vette

Active member
Joined
Jun 29, 2007
Messages
43
Location
Columbus, OH
Corvette
1980 Frost Beige Corvette
A few weeks back the heater blower stopped working in my 1980. Of course, first thing I did was check the fuse and, yep, it was blown. So I installed a nice new pretty green 30 amp and it blew immediately. Making sure it just wasn't a bad fuse I tried one more time and, Pow. It blew too. So somewhere there's a short, right? I tested the switch and it was fine. I inspected all the wiring I was able to access and it all appears to be in very good condition. Upon the suggestion of someone and since they're not expensive, I ordered a new blower motor. Thing is, when I removed the old one I found that it wasn't the original as I'd assumed. It had a manufacture date of 2001 on it so the previous owner must have replaced it. Being electrically ignorant the only other thing I could think to do it take the wire to the blower motor and connect it to the ground wire to the blower motor, turn on the power, turn on the blower switch then touch the two prongs where the fuse goes with my tester to see if the light comes on. Well it didn't. So . . . does anyone have any suggestions of anything else I could try to find out why this thing isn't working before I have to tear the entire dash apart to trace every inch of the wiring? Anything . . . ? Anyone . . . ?
 

bill81vette

Moderator
Joined
Jan 17, 2004
Messages
4,272
Location
Troy,NY
Corvette
1981 dark blue metallic
Try hooking up from a battery that is separate from the Vette and see if it runs.
If you have to take your battery out.

Sent from my moto z3 using Tapatalk
 

bill81vette

Moderator
Joined
Jan 17, 2004
Messages
4,272
Location
Troy,NY
Corvette
1981 dark blue metallic
if you have a spare battery,use a couple of jumper wires,to power your blower motor.
or disconnect the battery in your vette or one of you cars and jumper the positive and negative sides.
if the blower still works then your vette has a short in it.have you tried putting a fuse in while the blower motor is out,
to see if it still blows???if it does,you may have to start tracing wires to find the short.
good luck!!!!
 

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