SVA for Dummies

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nomis
Posts: 441
Joined: Tue Nov 27, 2007 12:09 pm
Name: Simon
Year Of Mustang: 1971

SVA for Dummies

Postby nomis » Fri Aug 08, 2008 12:02 pm

I appreciate there are a myriad of threads on SVA and the SJB; however, can anyone, in simple terms tell me how a good company would complete the changes to an S197 so that it would pass the SVA (and not ruin the SJB)?

(I said in simple terms ;) )

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Robbed666
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Joined: Tue Aug 28, 2007 4:54 pm
Year Of Mustang: 2005

Re: SVA for Dummies

Postby Robbed666 » Fri Aug 08, 2008 2:40 pm

Things you don't want:

All the rear brake lights wired into the centre stop lamp (CHMSL).

Additional rear indicator bulbs, wired directly across the the front indicators.

Bulbs used as dummy loads hidden in the boot

'Automotive style' relays in the conversion. (low coil impedance which causes high energy back EMF spikes, when de-energised).

Rear fog lamp drive taken directly from dipped beam ouputs.

Additional wiring 'tapped' into the brake light switch (either of them, there are two).

Anyone using 'Scotch locks' should be taken outside and shot!

What you do want!

Properly 'loomed' cables. With at least two independant layers of insulation, not just single wires or bunches of wires laying directly on bodywork.

Grommets used at every bulkhead hole, and then properly sealed.

Independantly fused addtional circuitery, fused as close to source (i.e the battery) as possible.




I personally do not like additional 'control boxes'. A decent independant opto-coupled system would be more than adequate.

But why not do the job properly, and reconfigure the SJB internally. (no dummy loads, no bypassing anything, and very minimal external wiring changes ;) )

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nomis
Posts: 441
Joined: Tue Nov 27, 2007 12:09 pm
Name: Simon
Year Of Mustang: 1971

Re: SVA for Dummies

Postby nomis » Sun Aug 10, 2008 10:38 am

Thank you :)


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