any one have plx DM-100 gauge? needing help

[AV62NV]

when i hooked every thing up and turned the key (had the radio on) the gauge kicked on and messed with the radio sound, maid noises that where amplified the speakers. i have tried diff. power sources and grounds(ecm and fuse box) with same noise coming out.any idias on what i could try?

 

[Royal-T-Ltd]

when i hooked every thing up and turned the key (had the radio on) the gauge kicked on and messed with the radio sound, maid noises that where amplified the speakers. i have tried diff. power sources and grounds(ecm and fuse box) with same noise coming out.any idias on what i could try?

usually noise through the radio is a bad ground.... where and how did you ground it????

 

[AV62NV]

first had power from fuse box and grounded next to it where i saw other grounds then i read on here that its cleaner and better to get ground off ecm so borrowed the ground and power from tps sensor which also tied to my map sensor