Thread: Just put my new head unit in..

So, I just installed my new HU, took a drive and all of about a half hour no problems, pulled back into my garage and Im sittin there listening to it for an additional 10 minutes when suddenly all my gauges, tach, coolant temp, fuel, drop dead, my aeroforce dies, and my DIC starts giving me everything off... trac off. stability off, etc Turned the car off and then just turned the ignition back on, and the gauges and aeroforce were good again. Any ideas?

So after an hour or so on and off the phone with Crutchfield support, they had me disconnect the illumination wire, that wasnt it.
They had me disconnect the whole harness and interface, then reconnect it as a reset and cycle the ignition 5 or 6 times so the interface can "learn" the vehicle and vice versa, didnt work, was still happening.
Finally I replaced this new harness with my old one from the old head unit, and I didnt see the problem happening at all, put in the new harness again and bam, it's back.

So now they're sending me a new interface to plug into the harness... weeeee

jspang, I had t he gmos-01 with my old head unit and it worked flawlessly for probably 4 years now, when this new harness started failing I swapped the old gmos-01 in to test if it was the HU or the harness, guess what... no more problems. It just doesnt retain my monsoon amp, so I dont wanna use that long term. I have a gmos-04 on the way, should come tomorrow I'll let you know what happens.

Crutchfield techs said that the crux units have been full of problems but the Gmos units are extremely reliable, Im hoping that since the gmos-01 works perfectly, the gmos-04 will also be good for me.

The tech also told me that wiring up the illumination wire if the head unit doesnt match for it could cause that issue. Like my crux thing had an orange wire for illum, but the HU harness had an orange and white wire... and then the HU doesnt support illumination..

Lol yeah that's one thing I was really happy with on the crux, chimes sound nice.

The gmos unit I could never get to adjust right so it's loud and obnoxious and only got worse when I hooked it up to the amped system lol.

Hopefully I can adjust the 04 better, I'll find out when I leave work in an hour hopefully

K so I got the gmos-04... it doesnt use any of the RCA's, it wires up wire for wire same as the gmos-01.

And yeah, it works great, I havnt seen my gauges die once yet and the amp is noticably bumping lol.

One thing I dont know about is that with the other 2 harnesses like 10-15 was really loud... I was afraid going past 16 or 17 would blow my speakers. But with this gmos-04 it's a lot quieter, like 25-30 is really loud now and 15 is pretty quiet... I dont much understand that.

there is a gain pot on the side of the black box so you can adjust the volume to suit your taste.

The part that sucks though is that turns the chimes up too I think

Im really happy with quiet chimes lol... Probably gunna turn it up anyway though. I hate having to crank it to 20 just to hear it

so, with the GMOS-04 alone, were you able to retain the Monsoon amp and steering wheel controls?

Originally Posted by gloebird

so, with the GMOS-04 alone, were you able to retain the Monsoon amp and steering wheel controls?

Amp, yes... But any adapter I've seen on the market needs a separate thing to retain steering wheel controls. They all word it like it will retain by itself but they all need a separate adapter

thanks alot, i appreciate your help. man, class II radios are ridiculous. all this just to have a 3.5mm aux input LOL.