All interior lights seem to be pulsating at idle, does anyone have any ideas, the bea

[lakemeadzmonster]

Charcoal Metallic #1217 53811990 ZR-1

Sent from my SM-G860P using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

[Kevin]

Alternator is going bad

[G8nightman]

Make sure your negative connection to the Batt is clean and tight.

[George Maz]

Same issue here.
More so with dashboard lights diming and brightening. The volts gauge needle floats up & down, especially noticeable at idle...and when using turn signal. Sometimes gauge reads lower than halfway point. Engine idle is smooth at 975-1000rpm (guestimated). I haven't checked connections with a voltmeter yet. Car starts up quickly. Alternator appears newer, clean ...which means nothing since even new ones can be faulty.
relocated Odyssey PC925 battery.
SGC stage 1 cams
corrected alternator pulley size
battery quick-disconnect
some interior LED white lights

[Billy Mild]

I have this issue too. I chalk it up to a battery issue. I have already cleaned all my grounds.

[KJL]

If all connections are tight, it is likely an alternator issue and likely the voltage regulator. Look around and see if there are any folks out there that can rebuild it for you. I had some issue about a year ago and even replaced the alternator and it was then I found the red hot wire on the rear of the alternator was loose. Because of fitment issues I put the old one back in and was back in business. My dash lights still pulsate a little but everything appears to run fine now. Summit sells an alternator that is billed as direct fit but it needs to be dissembled and re-Clocked to get the harness connection where it needs to be. There are other differences as well regarding the upper mounting, ours use a pass through bolt while this unit used two threaded bolts which would not work. The alternator housing needed to be drilled out to remove threads to so bolt could pass through.... I think the brand was Master?

If is just a little pulsation, keep an eye it if all else checks out OK. Replacing the alternator is a PITA. It can be done without removing the intake plenum but other stuff will need to be removed....