Hello. I haven't been able to find a diagram of a 68 Firebird fuse box - the closes I've come is a 68 Camaro. I found two (1 a diagram and 1 a photo), but they are slightly different although I thought both were for a 68 Camaro.

First, does anyone have one for a 68 Firebird? Second, which of these is accurate? Notice the difference is the wiper & heater are reversed and the picture one has a power/acc @ 30A below the flasher.

Thank you.

In a '68:


and one w/o the wire/connector clutter:


And a diagram:

Isn't there a diagram of the fuse panel in the Owner's Manual?

Thank you so much!

I looked in the service manual but either couldn't find it or it wasn't there (probably the former).

Jim

I have a 69, should there be something pugged into the LPS spot in my fusebox? Currently trying to figure out what's wrong with my dash lights, might this be it?

There are two LPS locations, one for a fuse INST LPS and the other a male terminal LPS. The terminal is just for accessories, say you add an aftermarket gauge set and you want the lights to dim with the dash lights. But the fuse, yeah, if it is not there, you won't have dash lamps.

Sorry to resurrect this...
I'm installing a 68 hood tach, on the fuse block there a few male flat stake-on terminals, one is occupied by two red wires to the BAT terminal, and another is occupied by two grey wires on the LPS terminal. Where should I land the tach wire for the light?

Check where the gray wires plugged into the LPS spade go. When GM added an option that needed power from one of those terminals, their harness is split into two wires, one to the option they are powering and the other wire a tap with a connector on it, thus allowing another option to be plugged into that source. Check out this clock harness and you can see the taps off the orange and gray wires. The clock needs 24/7 (orange to the Bat) to run the clock and lamps power (gray to the Lps) to light up the clock when the light switch is on.

Well, wadayano... you're absolutely correct.
Clocks getting power from the BAT and the light comes on when I pull the light switch.
So I expect then to plug the tach light into the grey splitter, but I've got my aftermarket gauges in that for their backlight. I doubt there's much of a draw so maybe just split it again and add the tach light?

ACC tab was free, so used that. Tach lights are on when the key's on... so good to go- will help dry up any condensation that might show up in the fall.

That works. Just realize that if you sit with the engine off but the radio on, the light on the tach will be on also.

In the past, whenever I wanted to make something like that splitter/tap, I would stop at Radio Shack. I don't even know where you can get electronics odds and ends locally anymore.

FYI: Radio Shack does still exist as an online parts company.

A backup is the big FYI box stores, but you usually have to buy way more of the needed electrical parts than you wanted.

X2 on Radio Shack. I’ve found Digi-key helpful for switches, relay sockets and the crimp terminals to lock in them. Their web sight takes a little getting used to because they carry a lot of components. I’ve found their shipping to be inexpensive and quick.

Learn something every day. I thought Radio Shack was long gone. I don't recall them appearing as I search for stuff. I used to enjoy standing in the isles at Shack and designing what I needed. Guess I'll do that on line. I like that Digi-key site too.

History repeating itself: A hundred years ago I would order electronics components from an Allied Radio & Electronics catalog and waited for it to be delivered. Looks like it's back to that. (FYI, Allied Corp. was purchased by Tandy/Radio Shack 40-50 years ago.)

Similar to Performance Bicycle. I used their catalogs to keep my bikes running when I was overseas in the late 80's and then they started brick and mortar stores. There were a bunch of them spread around the Phoenix Metro area and then they started closing up after I moved back here.

Now it's back to a catalog and a web site.

Those spade terminals in the fuse box labeled BAT, ACC, IGN and LPS in the photos, are they fused at all. I don't remember if they are fuse from the adjacent circuit or not.