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#1 |
Registered User
Join Date: Jun 2007
Location: Denton NC
Posts: 3
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Hey guys long time reader... 1st post.
I have read over the posts about this & all I can find are A/C setups. I have a 1970 c10 (non AC) that has had the wiring "rearanged". The wiring inside the truck is intact & I have a new fan switch. I know the resistor is inside the heater box. My question is where is the relay on a Non AC truck? There is, what appears to be a relay, above the fan motor on the engine side of the firewall; with a gorund tab screwed to the firewall and 3 wire connectors (labled L, B, & S). Is this my fan relay? If so how is it wired? I have one orange wire coming from the resistor through the firewall. Does this connect to the fan motor or a relay? P.S. Pics are great, and I am color blind; so wire color may be hit or miss.. I know it's alot of questions.. Thanks in advance. Smitz |
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#2 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,483
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Re: Non AC blower motor Relay
Quote:
There isn't a relay on non A/C trucks. The orange wire connects directly to the blower motor. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#3 |
Registered User
Join Date: Jun 2007
Location: Denton NC
Posts: 3
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Re: Non AC blower motor Relay
Cool. Thanks Lockdoc, for the quick reply. I dont know what that relay is for but if it is not for my fan I will not worry about it right now.
One more issue.. When I move the fan switch, I get 12v at high position, nothing on the other positions. Is this the resistor? |
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#4 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,483
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Re: Non AC blower motor Relay
Quote:
I would think so unless your new switch is faulty. There are 2 wire coils on the resistor board, see if one of them is broken. Gently pry the wiring plug off with a small screw driver, working from side to side. It takes a 5/16 nut driver to remove the two hex head screws Leon.
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#5 |
Registered User
Join Date: Aug 2012
Location: Indiana
Posts: 470
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Re: Non AC blower motor Relay
im surprised you have been able to go almost 6 years without posting lol
__________________
70 C10 working on a LSx swap ![]() 4.8L MS3 edelbrock pro flo intake, pacesetter long tubes, 4l60e 2500 stall hoping the tranny holds up lol |
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#6 |
Registered User
Join Date: Jun 2007
Location: Denton NC
Posts: 3
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Re: Non AC blower motor Relay
I try to spend more time in the garage than on the internet.
![]() I thank you guys for the prompt replys! Whats the best source for the fan & motor, on the cheap? |
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#7 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,483
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Re: Non AC blower motor Relay
Quote:
LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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Tags |
blower, heater, non ac, relay, resistor |
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