Author Topic: Rear defogger wiring question... (Read 1950 times)

purplehrtchallenger · « **on:** July 29, 2008 - 10:51:20 PM »

Hey guys,
I am trying to wire a rear defogger into my 70 Challenger (did not come with it originally). it has a three way switch (off, low, high).
When I look at the wiring diagram, the difference between low and high is the low speed has a higher gage wire (more resistence) and high speed has a lower gage wire (less resistence). well, both of these wires splice together somewhere before they get connected to the blower unit.
My question is: how long is the two wires before they both splice together to connect at the blower?

any help would be GREAT!

thanks!
PHC

Slotts · « **Reply #1 on:** July 30, 2008 - 07:28:05 PM »

Hey PHC,

First off, there were two different types of motor wiring. One motor with a single lead connection to the wiring harness and one thru a resistor coil mounted on the motor fan housing. The harness for the single motor lead is doing the resistance work with the wire gauge as you said. Either way, you connect thru the power to switch harness and then into the front to rear harness.

Hope that helps.

Slotts

hemiken · « **Reply #2 on:** July 30, 2008 - 09:48:41 PM »

Quote from: Slotts on July 30, 2008 - 07:28:05 PM

Hey PHC,

First off, there were two different types of motor wiring. One motor with a single lead connection to the wiring harness and one thru a resistor coil mounted on the motor fan housing. The harness for the single motor lead is doing the resistance work with the wire gauge as you said. Either way, you connect thru the power to switch harness and then into the front to rear harness.

Hope that helps.

Slotts

I had a feeling that Slotts would be your man to help on this one

purplehrtchallenger · « **Reply #3 on:** July 30, 2008 - 10:38:34 PM »

Quote from: Slotts on July 30, 2008 - 07:28:05 PM

Hey PHC,

First off, there were two different types of motor wiring. One motor with a single lead connection to the wiring harness and one thru a resistor coil mounted on the motor fan housing. The harness for the single motor lead is doing the resistance work with the wire gauge as you said. Either way, you connect thru the power to switch harness and then into the front to rear harness.

Hope that helps.

Slotts

Slotts,
Cool beans! Thanks...I have the one like the picture on the left...my last question: I don't have the harness, so am going to create the dual gage wire harness on my own, but just need to know how long to run the two different gage wires before I slice them into one wire...can you help me please?
thanks a million!!

PHC

Slotts · « **Reply #4 on:** July 31, 2008 - 07:22:04 AM »

Hey PHC,

I'll take a look after work tonight and let you know if you want to make you own.
I have an extra original single line harness with new hoods and spade terminals for $20 plus shipping if your interested.

Quote from: hemiken on July 30, 2008 - 09:48:41 PM

I had a feeling that Slotts would be your man to help on this one

Hey Kenny,

Is everything OK? A high fever possibly? I don't ever get comments like that.

I always seem to get the

or

after everything.
Get well soon!

Slotts

hemiken · « **Reply #5 on:** July 31, 2008 - 08:07:56 AM »

Quote from: Slotts on July 31, 2008 - 07:22:04 AM

Hey Kenny,

Is everything OK? A high fever possibly? I don't ever get comments like that.
I always seem to get the or after everything.
Get well soon!

Slotts

I now know what was wrong SLotts. It was an eye problem that day, I could not see myself being nasty while you are holding my gauge cluster for ransom..........................

purplehrtchallenger · « **Reply #6 on:** July 31, 2008 - 07:01:29 PM »

Slotts,
Thanks again for the help and the wiring info!!

...but what am i supposed to do with this box of stuff you gave me that says "australia" and "funk brothers" on it???

and why does it smell like koala

PHC

Slotts · « **Reply #7 on:** July 31, 2008 - 08:25:08 PM »

Hey PHC,

Your reply will cause more confusion for Kenny than a fox loose in a hen house!

Slotts

hemiken · « **Reply #8 on:** July 31, 2008 - 08:38:06 PM »

Slotts · « **Reply #9 on:** July 31, 2008 - 08:53:55 PM »

Kenny,

PHC decided he wanted me to ship this wiring harness to him. When I read his address this morning, turns out he is a fellow Pittsburgher.
We met after work and he now has a wiring harness. Since he didn't understand what your instrument cluster post was about here, I explained the story.
The Australia box was regarding your cluster.

Looks like you will be getting double teamed!

My pleasure meeting you PHC and will see you at the Nats.

If you get a moment, it would be great if you introduced yourself in the newbie section and remember we love pictures.

Slotts

hemiken · « **Reply #10 on:** July 31, 2008 - 09:07:19 PM »

Thanks ....................... i think

purplehrtchallenger · « **Reply #11 on:** August 01, 2008 - 11:27:46 AM »

Slotts,
Thanks again! the wiring was PERFECT!

will get photos out this weekend (I hope).

The car just went out this morning for the final exhaust work and front end alignment (Hope it doesn't rain today!!) ..will be finishing up the rest of the last 5% (to include find that &^% short) this weekend. looking forward to driving my purple one to columbus in a week

cheers!!

PHC