When I look up the bracket for the dual alternator 97356246,I thought stock dual alternator setup was two 105 amp. But there is nothing preventing the use of 145 amp alternators unless the charging wire gauge is too small. Ambulance package may be different
AGM batteries have some of the lowest internal resistance out of all the lead acid batteries. That lower resistance can increase the charging current when the battery is discharged. If one or more of your alternators are weak or have a bad connection then it could stress it enough to possibly damage the regulator and cause the same situation as Zak hadDid you put in AGM batteries? My 2011 gasser has charged high since I put an AGM in it, but it's only about 15.2.