Hooking up a boost gauge to my turbo 04

[SaturdaysGS]

So basically I have everything swapped over to my supercharged 04 from my smashed turbo 04, runs and drives great.

But I have a digital boost gauge that I don't remember how it was hooked up. This is a picture of the digital gauge, the wiring and the wiring it was hooked up to under the hood. Looks like it was kinda rigged so I wanna do it right.




What am I looking at and what do I do to make it work. Currently the boost "bars" on the info center work if that matters.

Thanks
-Nick
[MENTION=53]Turbocharged400sbc[/MENTION]

Click to read more...

 

[1quick]

Looks like that green wire was tied into the maf sensor, that plug looks like a maf sensor extention harness, other than that I have no clue what colors go where, I would see if you can print out a diagram off the manufactures websight, or switch to a mechanical boost gauge

Er that could be the map sensor harness that would make more sense lol it's been a while since I've messed with a 3800

 

[SaturdaysGS]

I think it was connected to the map sensor, fairly certain. Unfortunately I don't know the manufacturer of that gauge so I've tried googling and not seeing anything similar to
It.

 

[Turbocharged400sbc]

looks like power (white?), ground, signal and possibly a signal output for a 0-5v A/D logger

the map harness feeds it the map signal

 

[SaturdaysGS]

Do I attempt to hook it up and take a chance??

 

[Turbocharged400sbc]

your pictures suck but imma take a chance that the white wire has some sort of red wire connected to it under that shitty tape job?

the black wire has a black wire connected t it at the other end of the sibling to the other shitty tape job.

i cant tell if the tan/blue are the same length but it looks like the blue is cutoff shorter...is that white at the end of it a label?

if the blue wire/insulation is the same length as the wire strands of the brown then id guess the brown was the signal wire to the green map sensor wire.

look at the ends and figure out how a younger dumber version of yerself woulda just snipped shit to yank it out of an old car...

 

[SaturdaysGS]

Here's a pic that's better I peeled off the tape

I'm on tapatalk so I just did medium quality pictures, this last picture is best quality. Wires being white black blue and brown. The white and black have crimp connectors, they were the ones with tape on them.

 

[Turbocharged400sbc]

ok imma go on a limb here....

the white/black are possibly power/ground, what was in the other end of the crimp connector? can you see the orig wire insulation colors on the cut sides?

its likely then that the two green wires at the map adaptor are connected to the signal and the signal ground wires

in that case its likely the blue is the signal input and the tan/brown is the signal ground for the map sensor.

if you can be sure that the crimped wires went to power/ground...

if those crimps have green in the other end then the whte/black go to the sensor

 

[SaturdaysGS]

There is nothing in the other end of the crimp connectors unfortunately, someone must have yanked them out. Here's a picture of the adapter with the loom removed.

 

[Turbocharged400sbc]

what the fuck

why did they break the circuit? i dont see how the fuck they had that setup...

 

[SaturdaysGS]

Yeah that's why I'm at a loss.

 

[Turbocharged400sbc]

your gonna have to pull the box apart and see where the wires go, youll be able to see the power/ground circuits fairly readily if its old school electrical shit.

 

[SaturdaysGS]

Well I happened to find who makes the box and they have install instructions so I believe to have it all Figured out.

Dynotunenitrous.com

Brown power / blue ground.

 

[Turbocharged400sbc]

well gee dont i feel helpfull

 

[SaturdaysGS]

Well I appreciate the help, now on to hooking it up.

 

[Turbocharged400sbc]

no you dont