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GMC Guy · 05-28-2009, 07:13 PM

i agree, but in the winter time it really sucked, especially not having a way to defrost the windows...so my challenge was to figure out how to hook up the ducting to the stock defrost vents...(used a lot of duct tape). but i mounted mine so the vents faced up, and i have two 90* pvc elbows attached to the outlets on the heater so that the hoses run straight through the firewall. haven't tested it yet..but i'm sure it will work. just haven't been motivated to get under there and do it yet, been working on other stuff

05-28-2009, 07:13 PM	#153
GMC Guy Registered User Join Date: May 2009 Location: Sparks, NV Posts: 913	Re: my 80 build i agree, but in the winter time it really sucked, especially not having a way to defrost the windows...so my challenge was to figure out how to hook up the ducting to the stock defrost vents...(used a lot of duct tape). but i mounted mine so the vents faced up, and i have two 90* pvc elbows attached to the outlets on the heater so that the hoses run straight through the firewall. haven't tested it yet..but i'm sure it will work. just haven't been motivated to get under there and do it yet, been working on other stuff __________________ Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__ ............._____l __\__ ..............l_(O)_ l___(O)]