Replacement for leaking heater

[Bobacuda]

Update on my heater woes.

 

After having no luck finding or fixing my truck’s leaky heater, I ordered an inexpensive (12v fan) from Amazon. It will spin on 6v, but not very fast. And if wired as positive ground, the electric motor turns the squirrel cages backwards. 
 

I also bought a 6v to 12v step up transformer. When I tested the heater after the step-up, it spun great. 
 

Construction issues - the heater was missing the 4 screws that hold the fan in place. The core was only anchored on one side - the other screw missed its spot. 
I corrected all of that.

 

Now I have to figure out a good mounting brace under the dash, figure out the plumbing and wire it. The plan is to run 10 gauge wires from the battery (+and -), through the converter to the unit. The + wire will be an on/off toggle and a 10 amp fuse prior to the converter. That way, it only gets voltage to the heater with the switch on, then it runs wide open.

 

So far, I’m in about $60. 

[greg g]

Seems to me the original switch is resisted.  So at 12 v medium speed would

D be around 6 to 8 volts draw which for all but arctic bomb cyclone should be effective.

 

For you guys contemplating similar replacement, a transmission cooler might make a nice heat exchanger.  

 

You project looks great.  The hammered finish paint  period correct.