This gets complicated. Last winter the blower stopped working in my 1995 GMC K-3500 Dually so I reached over at the bottom of the dash and wiggled the wire harness under the glove box area. The blower came back on now this happened several times before one day it did not start. I thought about that for awhile and figured it could be that rubber connector on the blower motor so I got a new one and you guessed it that didn't work.
Now I get my test light out and there is no power at the blower connector so where do I go from there the fuse block and all fuses are good inside or outside under the hood Now what to do well the truck is 26 years old and forget about finding a wiring diagram oh there are some but they are so small and fuzzy they are useless. Now one more monkee wrench here is this truck sat for some time on a farm and mice had been in it. I took thr glove box out to follow the wires if possible. Not possible but there was a small mouse nest there I vaccumed out no bear wires I could see.
So a friend and I decided to run a hot wire to a switch and then the blower motor so I could have heat to defog the windshield and have heat.
I might as well tell you I was a GM Olds- Pontiac- GMC mechanic off and on for over twenty years and did a lot of electrical work with wiring diagrams but never anything like this problem. All of that was in Texas where you never see heater problems or many more of those here in NW Indiana.
As I kept going I bought a new control head and found you cannot get the original anymore and it requires a jumper harness to install which by the way is $200 for a 6 inch harness and another $89.00 for the control. So I pulled the dash panel apart, the control and radio and another mouse nest we sucked up with no visable damage to the wiring. I pulled the instrument cluster to see the wiring harness and can't see it because of a plastic panel behind it. I then found there was no power at the control either.
I do not know where the power is suppoed to come from. It just so happens I have a 1988 wiring and troubleshooting manual but of course the 1995 is not the same and there is no junction block under the hood that supplied power to the control then.
One more thing I should explain here is last March I had my shop burn down and lost all my tools and over $80,000 in 50 years of accumulation so I have no place to work inside and spring is not helpful as it is April and it snowed last night. I made an appointment last week to take the truck to a place that specializes in electrical work. I am 75 years old and just cannot deal with this anymore.
All wiring diagrams on the Internet are too small and cannot be enlarged and are so fuzzy you cannot read them or I can't and for some reason there are no collors to the wires anyway. This truck has been a money pit so far as I bought it at an on-line auction knowing it might have a blown head gasket and it is a diesel. Yes it did and that alone cost me over $3500 parts and labor to fix and I now have over $10,000 in a 27 year old truchk with 106,000 miles on it.
Any ideas would be welcomed but now a little late maybe. I did hear there is a fusable link somewhere but don't know where that could be.
Now I get my test light out and there is no power at the blower connector so where do I go from there the fuse block and all fuses are good inside or outside under the hood Now what to do well the truck is 26 years old and forget about finding a wiring diagram oh there are some but they are so small and fuzzy they are useless. Now one more monkee wrench here is this truck sat for some time on a farm and mice had been in it. I took thr glove box out to follow the wires if possible. Not possible but there was a small mouse nest there I vaccumed out no bear wires I could see.
So a friend and I decided to run a hot wire to a switch and then the blower motor so I could have heat to defog the windshield and have heat.
I might as well tell you I was a GM Olds- Pontiac- GMC mechanic off and on for over twenty years and did a lot of electrical work with wiring diagrams but never anything like this problem. All of that was in Texas where you never see heater problems or many more of those here in NW Indiana.
As I kept going I bought a new control head and found you cannot get the original anymore and it requires a jumper harness to install which by the way is $200 for a 6 inch harness and another $89.00 for the control. So I pulled the dash panel apart, the control and radio and another mouse nest we sucked up with no visable damage to the wiring. I pulled the instrument cluster to see the wiring harness and can't see it because of a plastic panel behind it. I then found there was no power at the control either.
I do not know where the power is suppoed to come from. It just so happens I have a 1988 wiring and troubleshooting manual but of course the 1995 is not the same and there is no junction block under the hood that supplied power to the control then.
One more thing I should explain here is last March I had my shop burn down and lost all my tools and over $80,000 in 50 years of accumulation so I have no place to work inside and spring is not helpful as it is April and it snowed last night. I made an appointment last week to take the truck to a place that specializes in electrical work. I am 75 years old and just cannot deal with this anymore.
All wiring diagrams on the Internet are too small and cannot be enlarged and are so fuzzy you cannot read them or I can't and for some reason there are no collors to the wires anyway. This truck has been a money pit so far as I bought it at an on-line auction knowing it might have a blown head gasket and it is a diesel. Yes it did and that alone cost me over $3500 parts and labor to fix and I now have over $10,000 in a 27 year old truchk with 106,000 miles on it.
Any ideas would be welcomed but now a little late maybe. I did hear there is a fusable link somewhere but don't know where that could be.
