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hobbs switch wiring

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Old 11-18-2011, 03:40 PM
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Default hobbs switch wiring
bought the racetronix hobbs switch, how do I wire this up
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Old 11-21-2011, 08:08 AM
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Wire in the second pump, then install this between the 12v or ground trigger for the 2nd pump's relay
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Old 11-21-2011, 11:06 AM
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thanks, i supposed less power is drawn thru switch on ground side?
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Old 11-21-2011, 12:36 PM
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Doesnt matter

PCM is already controlling the 12v side, I put them on the grd side for simplicity
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Old 11-21-2011, 01:46 PM
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less of a wiring job to control ground side..run a short wire from the switch to the head/block then one long wire to the relay
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Old 11-21-2011, 06:05 PM
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thanks, how many devices(relays) can 1 hobbs switch support, I need to activate my 2nd fuel pump, 2 msd boost a pumps and meth kit
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Old 11-21-2011, 06:20 PM
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most of them are around 8 amps, more than enough to control mulitple relays
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Old 11-21-2011, 06:54 PM
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2nd pump is wired to painless fuel pump relay, can I just run power directly to alternator like hot wire kit? should I upgrade wire gauge? how do i manual override the relay?
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Old 12-07-2011, 09:17 PM
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where should activation or trigger wire for relays be wired to(86), also can a manual override switch be added?
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Old 12-09-2011, 08:18 AM
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12v source if you're using the switch as ground, yes you can wire an override switch
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