Rocker switch panel ideas

[noodlesandsam2]

i bought on ebay an Aux switch for the lower left blank, and a traction control switch for the lower right. looks OE, and I can do what I want with those switches

 

[NELLY1947]

Curious if anybody has done a rocker switch panel (these things). I've already drilled a hole in firewall for aftermarket devices, would like to add a few switches. Would be really cool if there's something for the blank spots in the dash, red box below...

I'm going to wire up a fan switch to command the high speed fan on.

View attachment 455050

I know this is a little off the subject but I needed to add this.
There is 2 spots on each side of the firewall specifically to pass extra wires on all new GMs. I found out cause I needed to pass a bunch of wires and was really uneasy drilling. My dealer showed me where they are hidden. And he knows if a few people who caused big damage drilling. there is so much stuff in the walls it nuts.

 

[justirv]

I know this is a little off the subject but I needed to add this.
There is 2 spots on each side of the firewall specifically to pass extra wires on all new GMs. I found out cause I needed to pass a bunch of wires and was really uneasy drilling. My dealer showed me where they are hidden. And he knows if a few people who caused big damage drilling. there is so much stuff in the walls it nuts.

Would you have a diagram or picture of these locations? Routing cabling through firewalls in a safe manner is pertinent to this discussion. I'm just starting my journey of exterior lighting and accessories and plan on running a single, multi-conductor (control) cable to a relay box somewhere in the engine compartment. Do it once (properly) and be done. Thanks.

 

[Matthew Jeschke]

I know this is a little off the subject but I needed to add this.
There is 2 spots on each side of the firewall specifically to pass extra wires on all new GMs. I found out cause I needed to pass a bunch of wires and was really uneasy drilling. My dealer showed me where they are hidden. And he knows if a few people who caused big damage drilling. there is so much stuff in the walls it nuts.

Likewise! I'd love to know where the additional wiring holes are in the firewall.

I currently drilled a hole where the master cylinder would go for the clutch if it was a manual vehicle and am using that but a wiring factory provision would be even better!

 

[justirv]

Likewise! I'd love to know where the additional wiring holes are in the firewall.

I currently drilled a hole where the master cylinder would go for the clutch if it was a manual vehicle and am using that but a wiring factory provision would be even better!

That's great, I believe there's a dimple for the extra bolt that a hydroboost pedal would need. Might be similar or the same as the one you mentioned.