Heater/Window Power Wire at Ignition Switch gets HOT
#1
Heater/Window Power Wire at Ignition Switch gets HOT
I have a 93 Dodge D250. The power wire coming in to the ignition switch and the heater blower/window motor wire going out becomes HOT when the components are on. The wire going out goes to the fuse panel. I have replaced the ignition switch because over time it became hot enough to melt and crack the shroud under the steering column. I have bi-passed and tested most all connections. Can someone assist me with solving this wire heating problem. Just ask if you need more info. Thanks
#2
#3
Thanks for the welcome, I've been working on this problem for months. I have replaced the heater blower as I thought that the bushings may be dragging due to the play in the shift. The simplest way I can explain it is: I have pulled the wires out of the ignition switch (the power in and the wire to the fuse panel) touching those together with the engine on or off, with the blower on high the wires get HOT. Touching the wires and just running the windows up and down the wire gets HOT. I've ran a jump wire from the power in (to the ignition switch) down to the fuse box the wire gets HOT. I've gone straight from the battery to the wire going to the fuse box, still it gets HOT. I jumped a wire from a seperate vehicle and the wire from the ignition switch to the fuse box still gets HOT. I've taken loose the connector behind the glove box and it gets HOT. I've individually jumped wires around the control head with no luck.
I know this is a lot to take in but the only way to run the blower with out a wire getting hot is straight from the battery. The kicker is that the window motor causes the wire to get HOT. That tells me it is a problem before the fuse box. I don't know too much of the relay locations (or what they look like) or ground points that may be bad. I went to Dodge and they gave me the repair manual with ALL the wiring diagrams but it really doesnt help if you dont know what the relays look like. Reply back if this helps.
I know this is a lot to take in but the only way to run the blower with out a wire getting hot is straight from the battery. The kicker is that the window motor causes the wire to get HOT. That tells me it is a problem before the fuse box. I don't know too much of the relay locations (or what they look like) or ground points that may be bad. I went to Dodge and they gave me the repair manual with ALL the wiring diagrams but it really doesnt help if you dont know what the relays look like. Reply back if this helps.
#4
#5
#6
#7
Welcome to the good OLE dodge crappy wires. Everything gets hot. I had the heater motor switch get hot and burn the contact right out of the switch. Many people over the years have had there headlight switch and wires go up in smoke. Any bad or dirty connection will put them over the edge. If you want you could wire some relays in and get rid of the heavy amp loads. Kind of a pain, but a solution.
Thread
Thread Starter
Forum
Replies
Last Post
1ATony
1A Auto Parts
1
01-05-2016 12:03 PM
1ATony
1A Auto Parts
1
12-07-2015 01:09 PM
1ATony
1A Auto Parts
1
10-29-2015 02:11 PM
RatsMC
Chevy/GMC 6.2L and 6.5L
19
05-04-2015 05:25 PM
mountainmover
Big Rigs & Semis
0
03-01-2015 06:03 AM