Reply to ""Hot" ignition switch?"

PartTimeAdult (Guest)

quote:
Can I use one relay for the "hot" coming out of the switch, or do I need multiple relays for everything the ignition switch controls?

I say you must be careful; having all ignition on a relay can cause other problems. During cranking, voltage is low enough to not engage relays; if the spark box or even points are on this relayed circuit, it can inhibit ignition, often the engine will fire or fart as you let go of the start position.

Things like electric choke and alternator energize are ok to relay, as well as most accessory circuits, but not your ignition sources. (points, msd/duraspark nor distributor pickup), due to low voltage condition during cranking.

3/13/074:38 AM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...