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Re: Help with heater needed
#2 wire is for an oil pressure light setup and would have hooked into the block behind the distributor.
#1 wire is for the engine temperature and was probably a "hot" light hookup.
Starting at the heater motor make sure it runs by connecting a 12 volt jumper wire to it.
If the motor runs then check for power at the heater switch, before and after. If no power at the switch recheck the fuse holder connections. From your picture it looks like there is a corrosion problem with the contacts. If power is going through the switch check the resistor block and wiring.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
Last edited by JimKshortstep4x4; 09-28-2009 at 07:37 PM.
Reason: Added wording
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