Replacement 6 gal hot water tank 110 volt with engine heat exchange

[LARRYT]

Forum probably time .. what is out there for a 1978 thanks larry

 

[Christo]

All the gory details, very happy with Isotemp:

Post in thread 'Plumbing done!'
https://www.gmcmotorhome.org/threads/plumbing-done.2266/post-641526