Let's talk DP Alternators!
My coach has a HEHR Powerline alternator with an external regulator. It uses a Ford voltage regulator. I was told by the pevious owner that the alternator was upgraded to 200 amps and I replaced the N...
Forum Discussion
vacuumbed wrote:
The isolator is a Cole Hersee. It's blue anodized with fins. I'm guessing it's diode based. It's part number 48160.
Then you will want an external sense wire for the regulator (whether built in or external regulator).
Do this test. Put engine at 1000 RPM. Check voltage at alternator (if accessible-- if not at center lug of isolator where wire comes in from alternator.
Now, check at the chassis battery lug of the isolator. Bottom line-- you want the battery to see close to 14 VDC with engine running, NOT 14- .7= 13.2 VDC.
