Going insane - Wiring questions

[45acpJr]

Ok I'm in the middle of a re-wire and it was going smoothly til I got to the light switch. I have seen two different wiring diagrams of the interior lighting and also a switch diagram. This is what I "know" correct me if I'm wrong. My harness has 7 wires, two of them in the same connection.

White - Dome ground
Red - Power
Light Blue - Headlights
Green - Cluster lights
Brown - Parking lights
Orange x2 - Dome light power

Now my confusion is the orange, in one diagram I see that all of the lights get power directly and they come on when a door is opened via the door switch completing the circuit. If this is correct why is dome power going to the light switch? Someone please help I'm going cross-eyed reading wiring diagrams.

 

[p0ps45]

Dome power goes to the light switch so you can manually turn on the light by turning the light switch knob.

 

[45acpJr]

In my diagram it shows that there is a constant power source going to the dome light, and the white wire leading to the switch is a ground. So when you turn the knob it completes the ground.

 

[45acpJr]

Ok guys nevermind I figured out what is going on, I purchased a re-wire kit from EZ Wiring, it is a 21 circuit fuse block which has a dome light circuit. The original wiring provided power to the light circuit via the switches power.

 

[p0ps45]

 

[oakknight]

http://www.73-87chevytrucks.com/techinfo/wiring_diagrams/77-80_cab_inter.jpg

Glad you figured it out

this looks like a great resource of information to have handy.
http://forum.73-87chevytrucks.com/smforum/index.php?topic=11766.0

 

[rockhard69]

Gald you got it figured out, wiring can be a big pain.

 

[badmix]

The dome light circuit in this trucks, mainly my K5 Blazer is not normal. I dont know what GM was thinking. But they are all tied into each other in a weird way. I cant explain it. Its just odd. I had a tough time trying to figure out what was pos and what was neg and found out it was all positive, lol.

Glad u got it though.

 

[TheBeast_88K5]

Dammit!


I was just gonna explain it, too....

I just rewired the WHOLE truck....

 

[scottystills]

http://www.73-87chevytrucks.com/techinfo/wiring_diagrams/77-80_cab_inter.jpg

Glad you figured it out

this looks like a great resource of information to have handy.
http://forum.73-87chevytrucks.com/smforum/index.php?topic=11766.0

Took a look at that and it's got some great info! Happen to know if there's anything for the 88-91? I've got the -87 Hanes manuals, couldn't find the later years, but I've found that the wiring is different enough to want something more specific.

 

[oakknight]

the 88-98 Chiltons covers the basic wiring on the R and v series Trucks as well as the new body.

 

[45acpJr]

Overall it was a pretty easy process, it has taken about 14 hours of work to get it finished but I have used split tubing on every wire and also am heatshrinking every connection. I'm hoping I will never have to re-visit electrical issues......assuming I didn't screw anything up..... I have the fire exstinguiser on stand by and will find out in a few hours