| Re: Vacuum pump wiring help [message #313629 is a reply to message #313624] |
Wed, 22 February 2017 10:32   |
armandminnie
Messages: 864
Registered: May 2009
Location: Marana, AZ
Karma:
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I have that same vacuum pump and same documentation with a different brand name (Frenos Iruna Brakes from Spain). Yes, the vacuum switch does provide a ground (via the Tee body) that activates the relay with their wiring arrangement. I don't know why you would need to override the vacuum switch though because the way they have it plumbed and wired it will be running a lot on its own. I ended up doing what Dave Lenzi recommends and having the vacuum switch (using his adjustable one) essentially measuring the vacuum inside of the booster (by disabling the normal check valve) and having the pump itself on the other side of an inline check valve. His booster has two vacuum ports which make that a lot easier.
Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
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