Harrie Posted March 25, 2017 Report Share Posted March 25, 2017 Hi all, As new on this forum I would like to ask you for some help. it's how to connect a extra fan with thermo switch and overrule switch, connected trough a relais. Have you the idee that this way is correct and were does the + come from? I suppose the + to 30 comes directly from the battery but were can I get the + to the switches from? Any help is welcome. Thanks, Harrie Quote Link to post Share on other sites
RogerH Posted March 25, 2017 Report Share Posted March 25, 2017 (edited) Hi Harrie, you can join all three +V's together and take them from the battery side of the starter solenoid This will supply power even when the ignition is off - so the fan will run until the thermo switch cuts out. Otherwise take the thermo and override switch power from the ignition side of the electrics - this will then cut out when the ignition is off. Keep the fan power connected to the solenoid as above It may be a good idea to have a warning light on the switch Roger Edited March 25, 2017 by RogerH Quote Link to post Share on other sites
Harrie Posted March 27, 2017 Author Report Share Posted March 27, 2017 Hi Roger, Thanks, I will go for the + on the starter solenoid. And the warning light was already in plan. But I assume that my drawing was OK. In an hour or so I will find out if it's working. Harrie Quote Link to post Share on other sites
AarhusTr6 Posted March 29, 2017 Report Share Posted March 29, 2017 May I ask why your doing this? I understand the technical why's, but do you in any way feel this is a steady road to modernising the car and it then losing it 'classicness'? I in an odd way like the old concept . . Quote Link to post Share on other sites
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