Newby here. Does a 72 have regulator built into alternator ? I’m having alternator light fade in and out. I wiggled wires including blue one but it’s still intermittent. I had garage put tester on. Battery only a year old. Tester on second try read regulator fail. Car starts right up every time. When night driving and headlights on alternator light gets brighter and remains on. Second question anyone know decent mechanic near Elkhart Indiana
Alternator
- Thread starter pkinden
- Start date
72s should have an external regulator. Big thing next to the relays near the battery.
Be sure to clean your grounds and battery posts.
You can try to find a new regulator (not sure, do they sell them?) or get an E12/early E24 alt w/a built-in regulator.
Just need to get a smaller bolt.
Be sure to clean your grounds and battery posts.
You can try to find a new regulator (not sure, do they sell them?) or get an E12/early E24 alt w/a built-in regulator.
Just need to get a smaller bolt.
I think BMW sells them as well as the usual resellers but they are probably the new, solid state version.
I wouldn’t just use a smaller bolt without changing the bracket or you could get movement.
x_atlas0
Well-Known Member
Did you read the output voltage? At idle it should be ~13.5, higher RPM should be ~14 and change, post-regulator.
CTD
Well-Known Member
What's up with that horn mounting...? never seen that before.
Factory location for E3 horns. No covers over the headlights so the horns recede above the lights when the hood is closed.
Mike Goble
Well-Known Member
An AC Delco CS-130 alternator is virtually a bolt-in replacement. 105A and pretty cheap.
e9coupe.com
CS-130 alternator conversion revisited
It's been several yeas since I swapped out the Bosch alternator for an AC Delco CS-130. I had forgotten exactly what was required to fit the CS-130 into the Bosch space. Since I was replacing my long block with a newer one, I decided to re-new the old alternator. This particular one is a...
e9coupe.com