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> heater lever wiring
dt4
post Aug 30 2021, 08:18 AM
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Hi,
Could anyone tell me the colour of the wire that goes to the heater lever please
A photo would be great help
thanks
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rhodyguy
post Aug 30 2021, 08:20 AM
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For the ground tab?
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mepstein
post Aug 30 2021, 08:38 AM
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dt4
post Aug 30 2021, 10:30 AM
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Aaahh of course I should have figured that
what triggers the fan to run then, does the lever make a connection in the up position?
I dont recall there being an earth wire off the loom in that area, I'll re assess

thank you both
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rhodyguy
post Aug 30 2021, 12:11 PM
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When the nub on the lever arm bottom contacts the ground tab, the engine compartment fan kicks on.
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IronHillRestorations
post Aug 30 2021, 01:47 PM
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It's white with a green stripe. It activates the heater fan relay in the engine compartment via grounding.
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dt4
post Aug 30 2021, 01:57 PM
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QUOTE(IronHillRestorations @ Aug 30 2021, 08:47 PM) *

It's white with a green stripe. It activates the heater fan relay in the engine compartment via grounding.

not a brown ground / earth wire then?
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IronHillRestorations
post Aug 30 2021, 06:17 PM
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QUOTE(dt4 @ Aug 30 2021, 11:57 AM) *

QUOTE(IronHillRestorations @ Aug 30 2021, 08:47 PM) *

It's white with a green stripe. It activates the heater fan relay in the engine compartment via grounding.

not a brown ground / earth wire then?


No, because it triggers the fan relay, so it's not a common ground.

I was wrong on the color coding, it's green with a white stripe
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dt4
post Aug 31 2021, 12:42 AM
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QUOTE(IronHillRestorations @ Aug 31 2021, 01:17 AM) *

QUOTE(dt4 @ Aug 30 2021, 11:57 AM) *

QUOTE(IronHillRestorations @ Aug 30 2021, 08:47 PM) *

It's white with a green stripe. It activates the heater fan relay in the engine compartment via grounding.

not a brown ground / earth wire then?


No, because it triggers the fan relay, so it's not a common ground.

I was wrong on the color coding, it's green with a white stripe

thank you
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dt4
post Aug 31 2021, 11:02 AM
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QUOTE(IronHillRestorations @ Aug 31 2021, 01:17 AM) *

QUOTE(dt4 @ Aug 30 2021, 11:57 AM) *

QUOTE(IronHillRestorations @ Aug 30 2021, 08:47 PM) *

It's white with a green stripe. It activates the heater fan relay in the engine compartment via grounding.

not a brown ground / earth wire then?


No, because it triggers the fan relay, so it's not a common ground.

I was wrong on the color coding, it's green with a white stripe

found it, it had been cut back for some reason so I connected an additional length of wiring and a connector to it and attached it to the spade connector on the lever..... but nothing happened, the fan didnt kick in when the lever is pulled up
Im struggling to see how the lever makes a connection to be honest.
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iankarr
post Aug 31 2021, 11:25 AM
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Check that the relay in the engine compartment is good and properly seated. As for the signal path, think of the lever as a ground interrupt.
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IronHillRestorations
post Aug 31 2021, 11:52 AM
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You can unplug the motor and test it by connecting to the battery. On the motor green is positive and brown is ground. I'm guessing you have a bad fan motor, or as Ian suggested a problem at the relay.

They used a relay that's triggered by grounding, so there's no power going to the switch on the heater lever.

If you're not sure how a relay works, check this out How a relay works
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dt4
post Aug 31 2021, 01:11 PM
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I checked the blower before fitting it so that parts ok
I need to check the relay, can anyone short cut me by pointing out which it is please

thank you

oh, and how do I check the relay

sorry for all the Q's
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NARP74
post Aug 31 2021, 01:22 PM
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Once again I am having a similar issue. Basically whatever is written about, I am working on. I started at the fan, only 2 wires, ground and power IIRC. I just used a powerprobe to trigger the fan and it works there, but not via the lever. So I am backtracking to find the culprit. Probably test the relay next.

Can you swap the 2 relays on the board for testing? I think they are the same.
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iankarr
post Aug 31 2021, 01:26 PM
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Easiest way to check relay is to pop off the covers next to the headlight motors and swap it in. If the motor works as usual, the relay is at least mostly functional. (IMG:style_emoticons/default/smile.gif)
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rhodyguy
post Aug 31 2021, 01:50 PM
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I forget (and don't run an aux engine fan), does the key have to be turned to the first position to power the fan?
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mepstein
post Aug 31 2021, 01:53 PM
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I never ran an engine fan either. Plenty of heat, even in sub freezing weather.
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rhodyguy
post Aug 31 2021, 02:08 PM
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Yep.
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dt4
post Sep 1 2021, 12:42 AM
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QUOTE(mepstein @ Aug 31 2021, 08:53 PM) *

I never ran an engine fan either. Plenty of heat, even in sub freezing weather.

I am not likely to use it much either but if it’s there it might as well work plus I like to try and figure stuff
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NARP74
post Sep 1 2021, 08:20 AM
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I run it to try and dissipate engine heat. Not sure if it works that way though.
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