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question- heated seat problems 200 1980

posted by  someone claiming to be bryan on  Mon Nov 13 11:57 CST 2000 [RELATED]

same volvo- 1980 245 wagon. i retrofitted heated seats from a 1987 wagon

into it, and put the switches in the instrument panel. hooked it up like i thought i took it apart. but, no lights come on when i hit either switch.

my electrical diagram seems to suggest that i need to run one of the switches to a relay, and the other directly to the fuse box. is this true? do i need a relay? if so, where can i get one and must it be a volvo relay or are there others i can use?

again, to brickheads of the world (myself included), thanks for your help.







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    Re: question- heated seat problems 200 1980

    posted by  someone claiming to be jorn schreurs on  Mon Nov 13 22:47 CST 2000 [RELATED]

    Don't know the details of the wiring but:

    The heated seats don't work when the contact is off. They must draw some power and a relay will prevent damage to your ignition switch. I also get the impression they have a thermostat somewhere. The are really nice and hot in the beginning but when your ass is comfy the seat seem to switch to a more relaxed mode, leaving you with a normal seat feeling (rather than something sweaty). I image the thermo must be in the seat somewhere, mabye the relay does the power switching, based on a temp sensor in the seat?

    My heated seats have the switches at the hand brake column (M47 trans) and are powered by 4 wires (would make sense with 2x power, 2x temp sensor signal. If you really need to know I can hook up an amp meter and tell you what the amps are and if there is a switching pattern (thermostat).

    Let me know how you are getting on.

    Reg,






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