Recently installed a 17in light bar and a pair of A Pillar lights. All LED. Light bar on one wiring harness and switch, A pillar on a separate harness and switch. Tonight was the first night since I completed the install and I was testing them out a bit, trying to get everything aimed where I wanted. In the situations where I turned on both the lightbar AND the A pillar lights I noticed the Jeep making a strange bump sound/feeling. I could feel it through the pedals and seat. It wasn't super loud and wasn't harsh or clunky, but definitely noticeable, and definitely there every time I used both lights. It doesn't happen when only one set of lights is on. Seemed to be a small drop in RPM when the bump occurs, kind of like a misfire. No movement in any of the other gauges including the battery voltage.
Seems obvious that it's linked to the draw of the lights, but the resulting symptom doesn't seem like an electrical symptom (i.e. no dimming of other lights). Any ideas what might be going on? Maybe not a big deal, but it doesn't sound or feel right. I wouldn't think some LED lights were really putting that much of a strain on the Jeep.
Seems obvious that it's linked to the draw of the lights, but the resulting symptom doesn't seem like an electrical symptom (i.e. no dimming of other lights). Any ideas what might be going on? Maybe not a big deal, but it doesn't sound or feel right. I wouldn't think some LED lights were really putting that much of a strain on the Jeep.